Maths After School
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MATHS AFTERSCHOOOL BIKANER www.aftershool.tk www.afterschoool.tk 10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• What are the roots of the equation: • 8x^2 -22x – 21=0
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• The answers are 7/8 and -3/4.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• 2x + 3y = 5, If the value of x is -2, what is the value of y?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• The answer is 3.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• (235^234 -135^234) is divisible by which of the following numbers: • 100 • 370 • Both • None
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, the correct answer is both • Now, (235^213 -135^213) is divisible by which of the following numbers: • 100 • 370 • Both • None 10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, 100 is the answer, as now the power is odd, and so 370 will not be able to divide it.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• (235^234 +135^234) is divisible by which of the following numbers: • • • •
100 370 Both None
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, the answer is None. Now next question: • (235^235 +135^235) is divisible by which of the following numbers: • 100 • 370 • Both • None 10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, the answer is 370.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• The sum of squares of three consequative odd numbers is 251, what are the numbers?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, the answer is 7,9,11.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• What can be the value of x, if • Abs Ι(5-x) /3 Ι <2
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• The value of X can be between -1 and 11 (excluding these values).
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• A number exceeds its seventh by 84, what is the number?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, X = 98.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• 4/5th of a number exceeds its 2/3rd by 8, what is the number?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, the number is 60.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• The sum of two numbers is 15 and the sum of their squares is 113, what are the numbers?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, the numbers are 7 and 8.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• 5 years ago, the average of ABCD was 45, with W joining them, their combined average is today 49. How old is W?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• 5 years back it was 45, so today 50, so their combined age (of ABCD) ,50*4 = 200 • But 49*5 = 245 • Therefore the age of W is 45 (answer).
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• The average age of 11 players of a cricket team is decreased by 2 months, with two new players joining them. The Old players of 17 and 20 years of age are replaced by two new players, what is the average age of new players?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Total of old players = 17 + 20 = 37 • 37 years – (2*11 months ) = 35 years and 2 months. • Average = 35years & 2 month / 2 = 17 years and 7 months (answer)
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• The average marks of 120 candidates was 35, the average of passed candidates was 39, and that of failed candidates was 15, what was the number of failed candidates? • 15 • 20 • 25 •10/14/08 30 afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, 20 is the right answer. • Next question: • A fraction bears the same ratio to 1/27 as 3/7 does to 5/9, what is the fraction?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• The answer is 1/35.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Rs1980 are divided among A,B,C in such a way that half of A, one third of B and one sixth of C are equal. What are the shares of A,B,C?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• A got 360, B got 540, and C got 1080.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• (3^1/2 + 2 ^1/2) / (3^1/2 - 2 ^1/2) = ?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• = 5 +2 * 6 ^1/2
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Thanks, Try again and achieve better success. • From: • AFTERSCHOOOL CENTRE FOR SOCIAL ENTREPRENEURSHIP • Sivakamu Veterinary Hospital Road, • Bikaner 334001 www.afterschoool.tk • AFTERSCHOOOL conducts free Post Graduate Programme in Social Entrepreneurship – any one can join it anywhere in the world. Afterschoool conducts workshops on social entrepreneurship all over the world – in schools and colleges. 10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• What are the roots of the equation: • 8x^2 -22x – 21=0
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• The answers are 7/8 and -3/4.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• 2x + 3y = 5, If the value of x is -2, what is the value of y?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• The answer is 3.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• (235^234 -135^234) is divisible by which of the following numbers: • 100 • 370 • Both • None
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, the correct answer is both • Now, (235^213 -135^213) is divisible by which of the following numbers: • 100 • 370 • Both • None 10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, 100 is the answer, as now the power is odd, and so 370 will not be able to divide it.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• (235^234 +135^234) is divisible by which of the following numbers: • • • •
100 370 Both None
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, the answer is None. Now next question: • (235^235 +135^235) is divisible by which of the following numbers: • 100 • 370 • Both • None 10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, the answer is 370.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• The sum of squares of three consequative odd numbers is 251, what are the numbers?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, the answer is 7,9,11.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• What can be the value of x, if • Abs Ι(5-x) /3 Ι <2
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• The value of X can be between -1 and 11 (excluding these values).
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• A number exceeds its seventh by 84, what is the number?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, X = 98.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• 4/5th of a number exceeds its 2/3rd by 8, what is the number?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, the number is 60.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• The sum of two numbers is 15 and the sum of their squares is 113, what are the numbers?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, the numbers are 7 and 8.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• 5 years ago, the average of ABCD was 45, with W joining them, their combined average is today 49. How old is W?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• 5 years back it was 45, so today 50, so their combined age (of ABCD) ,50*4 = 200 • But 49*5 = 245 • Therefore the age of W is 45 (answer).
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• The average age of 11 players of a cricket team is decreased by 2 months, with two new players joining them. The Old players of 17 and 20 years of age are replaced by two new players, what is the average age of new players?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Total of old players = 17 + 20 = 37 • 37 years – (2*11 months ) = 35 years and 2 months. • Average = 35years & 2 month / 2 = 17 years and 7 months (answer)
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• The average marks of 120 candidates was 35, the average of passed candidates was 39, and that of failed candidates was 15, what was the number of failed candidates? • 15 • 20 • 25 •10/14/08 30 afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Yes, 20 is the right answer. • Next question: • A fraction bears the same ratio to 1/27 as 3/7 does to 5/9, what is the fraction?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• The answer is 1/35.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Rs1980 are divided among A,B,C in such a way that half of A, one third of B and one sixth of C are equal. What are the shares of A,B,C?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• A got 360, B got 540, and C got 1080.
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• (3^1/2 + 2 ^1/2) / (3^1/2 - 2 ^1/2) = ?
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• = 5 +2 * 6 ^1/2
10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
• Thanks, Try again and achieve better success. • From: • AFTERSCHOOOL CENTRE FOR SOCIAL ENTREPRENEURSHIP • Sivakamu Veterinary Hospital Road, • Bikaner 334001 www.afterschoool.tk • AFTERSCHOOOL conducts free Post Graduate Programme in Social Entrepreneurship – any one can join it anywhere in the world. Afterschoool conducts workshops on social entrepreneurship all over the world – in schools and colleges. 10/14/08
afterschool career guidance centre, Bikaner, India, www.afterschool.tk
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