Mental Ability (NCO- Cyber Olympiad Class 9): Questions 120 - 125 of 219

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Question number: 120

» Mental Ability » Number Games » Number Analogies

Match List-Ⅰ List-Ⅱ▾

Question

Match the following
List-Ⅰ List-Ⅱ

(A)

7

(i)

Irrational

(B)

753

(ii)

Irrational

(C)

2

(iii)

Irrational

(D)

0.5555…

(iv)

Irrational

Choices

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

Question number: 121

» Mental Ability » Basic Algebra

MCQ▾

Question

If (p-5) is factor of p2q+pq-q , find the value of q.

Choices

Choice (4) Response
a.

-30

b.

30

c.

-29

d.

29

Question number: 122

» Mental Ability » Basic Geometry

MCQ▾

Question

How many circles of 3 cm radius can be drawn through each of three given 3 points as center of the circle?

Choices

Choice (4) Response
a.

Infinity

b.

3 only

c.

9 only

d. All of the above

Question number: 123

» Mental Ability » Basic Arithmetic

MCQ▾

Question

The bacteria in a culture grows by 20 % in the first hour, decreases by 10 % in the second hour and again increases by 20 % in the third hour. If at the end of the third hour the count of bacteria is 100000. The original count of bacteria in the sample is________

Choices

Choice (4) Response
a.

129300

b.

129000

c.

129900

d.

129600

Question number: 124

» Mental Ability » Basic Algebra

MCQ▾

Question

If (a-2) is factor of a2x + 4ax-1 , find the value of a.

Choices

Choice (4) Response
a.

17

b.

15

c.

16

d.

112

Question number: 125

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Sterling gold is 92.5 % pure gold. How many grams of sterling gold must be mixed to a 90 % gold alloy to obtain a 500 gm of a 91 % gold alloy?

Choices

Choice (4) Response
a.

100 gm

b.

50 gm

c.

150 gm

d.

200 gm

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