IMO- Mathematics Olympiad Class 8: Questions 508 - 516 of 1029

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Question number: 508

» Exponents and Powers

MCQ▾

Question

If xy=32 , then x2y2x2+y2 is________.

Choices

Choice (4) Response
a.

53

b.

513

c.

19

d.

135

Question number: 509

» Exponents and Powers

MCQ▾

Question

The value of x+3(xx) when x=1 is________.

Choices

Choice (4) Response
a.

4

b.

1

c.

2

d.

5

Question number: 510

» Exponents and Powers

MCQ▾

Question

The standard form of 0.003445 is________.

Choices

Choice (4) Response
a.

3.455×104

b.

3.455×102

c.

3.445×103

d. 3.445×105

Question number: 511

» Direct and Inverse Proportions

MCQ▾

Question

If x:y=1:5 and 3:x=1:5 , then the value of y is ________.

Choices

Choice (4) Response
a.

15

b.

65

c.

85

d.

75

Question number: 512

» Exponents and Powers

MCQ▾

Question

The value of (4096)56 is ________.

Choices

Choice (4) Response
a.

8044

b.

2044

c.

4450

d.

1024

Question number: 513

» Exponents and Powers

MCQ▾

Question

The value of (8)2+(15)2

Choices

Choice (4) Response
a.

15

b.

11

c.

17

d.

16

Question number: 514

» Direct and Inverse Proportions

MCQ▾

Question

Two numbers are in the ratio 5: 7. If each number is increased by 14, the ratio becomes 7: 9. The numbers are________.

Choices

Choice (4) Response
a.

35, 47

b.

25, 35

c.

35, 25

d.

35, 49

Question number: 515

» Exponents and Powers

MCQ▾

Question

Number of prime factors in 925×(15)11×(2)13(30)10 is

Choices

Choice (4) Response
a.

65

b.

73

c.

70

d.

72

Question number: 516

» Exponents and Powers

Match List-Ⅰ List-Ⅱ▾

Question

Match the following provided that a and b are any rational numbers different from zero andx, y are any rational numbers.
List-Ⅰ (Uses Of Exponent Rules) List-Ⅱ (Term With Different Base And Same Exponent)

(A)

(ab)x

(i)

1ax

(B)

a(x)

(ii)

axbx

(C)

(ab)x

(iii)

ax×bx

Choices

Choice (4) Response
  • (A)
  • (B)
  • (C)
a.
  • (i)
  • (ii)
  • (iii)
b.
  • (i)
  • (iii)
  • (ii)
c.
  • (ii)
  • (i)
  • (iii)
d.
  • (iii)
  • (ii)
  • (i)

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