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Q:

If the sum of squares of two real numbers is 41 and their sum is 9. Then the sum of cubes of these two numbers is

A) 169 B) 209
C) 189 D) 198
 
Answer & Explanation Answer: C) 189

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

Q:

The whole surface area of a pyramid whose base is a regular polygon is 340 cm2 and area of its base is 100 cm2 . Area of each lateral face is 30 cm2. Then the number of lateral faces is

A) 8 B) 9
C) 7 D) 10
 
Answer & Explanation Answer: A) 8

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

Q:

Two regular polygons are such that the ratio between their number of sides is 1:2 and the ratio of measures of their interior angles is 3:4. Then the number of sides of each polygon are

A) 10, 20 B) 4, 8
C) 3, 6 D) 5, 10
 
Answer & Explanation Answer: D) 5, 10

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

Q:

A Village lost 12% of its goats in a flood and 5% of remainder died from diseases. If the number left now is 8360. What was the orignal number before the flood?

A) 1000 B) 10000
C) 1,00,000 D) 8360
 
Answer & Explanation Answer: B) 10000

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Filed Under: Percentage
Exam Prep: Bank Exams

Q:

A Number is increased by 20%. To get back to the orignal number, the increased number is to be reduced by

A) 20% B) 21%
C) 16 2/3% D) 14 1/3%
 
Answer & Explanation Answer: C) 16 2/3%

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Filed Under: Percentage
Exam Prep: Bank Exams

Q:

The ratio of the number of boys and girls in a school is 3:2. If 20% of the boys and 25% of the girls are scholarship holders, the percentage of the school students who are not scholarship holders is

A) 56 B) 78
C) 70 D) 80
 
Answer & Explanation Answer: B) 78

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Filed Under: Percentage
Exam Prep: Bank Exams

Q:

If the three numbers in the ratio 3:2:5 be such that the sum of the squares is equal to 1862 then which number is the middle one.

A) 16 B) 14
C) 13 D) 15
 
Answer & Explanation Answer: B) 14

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

Q:

The ratio of number of boys to the number of girls in a school of 432 pupils is 5 : 4. When some new boys and girls are admitted, the number of boys increase by 12 and the ratio of the boys to girls changes to 7 : 6. The number of new girls admitted is

A) 12 B) 14
C) 24 D) 20
 
Answer & Explanation Answer: C) 24

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams