IMO- Mathematics Olympiad Class 10: Questions 553 - 558 of 958

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Question number: 553

» Everyday Mathematics

MCQ▾

Question

One fourth of a head of cows is in the forest. Twice the square root of the head has gone to mountains, and of the remaining, 15 are on the bank of a river. The total number of cows is ________

Choices

Choice (4) Response

a.

63

b.

100

c.

36

d.

6

Question number: 554

» Everyday Mathematics

MCQ▾

Question

P is thrice good a workman as Q and therefore is able to finish a job in 40 days less than Q. Working together they can do it in ________ days.

Choices

Choice (4) Response

a.

15

b.

14

c.

10

d.

16

Question number: 555

» Everyday Mathematics

MCQ▾

Question

A girl calculates that the probability of her winning the first prize in a lottery is 0.15. If 8000 tickets are sold, how many tickets has she bought?

Choices

Choice (4) Response

a.

1600

b.

1200

c.

1800

d.

1400

Question number: 556

» Everyday Mathematics

MCQ▾

Question

A man whose bowling average is 12.4 takes 5 wickets for 26 runs and thereby decreases his average by 0.4. The number of wickets, taken by him, before his last match, is ________

Choices

Choice (4) Response

a.

78

b.

64

c.

85

d.

72

Question number: 557

» Everyday Mathematics

MCQ▾

Question

If compound interest on a certain sum for 2 years Equation is Rs. 451 the simple interest will be ________

Choices

Choice (4) Response

a.

325

b.

352

c.

440

d.

625

Question number: 558

» Real Numbers

MCQ▾

Question

a, b, c are real numbers such that Equation and Equation Prove that Equation . When does the equality hold?

Choices

Choice (4) Response

a.

Equality hold when Equation and Equation

b.

Equality hold when Equation and Equation

c.

Equality hold when Equation and Equation

d.

Equality hold when Equation and Equation

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