Mental Ability [NCO- Cyber Olympiad (SOF) Class 7]: Questions 83 - 86 of 204

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Question 83

Question MCQ▾

The product of two numbers is 25 and the sum of their squares is 125. The sum of the number is.

Choices

Choice (4)Response

a.

21.21

b.

13.22

c.

16.90

d.

All of the above

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Question 84

Question MCQ▾

If and be any two rational numbers then we define:

Thus, subtracting a rational number means adding its additive inverse. Based on the statement given above solve the following Problem: Subtract from .

Choices

Choice (4)Response

a.

b.

c.

d.

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Question 85

Question Match List-Ⅰ List-Ⅱ▾

Match the following.

List-ⅠList-Ⅱ
(A)

Circumcenter

(i)

The point at which the altitudes of a triangle meet

(B)

In Centre

(ii)

The point at which the three angle bisectors of a triangle meet

(C)

Centroid

(iii)

The point of intersection of the perpendicular of the sides of a triangle

(D)

Orthocenter

(iv)

The point at which the medians of a triangle meet

Choices

Choice (4)Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (iii)
  • (ii)
  • (iv)
  • (i)

b.

  • (i)
  • (ii)
  • (iv)
  • (iii)

c.

  • (ii)
  • (iv)
  • (iii)
  • (i)

d.

  • (iv)
  • (i)
  • (ii)
  • (iii)

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Question 86

Question MCQ▾

A train 600 meters long is running at a speed of If it crosses a tunnel in 1 minute, then the length of the tunnel (in meters) is.

Choices

Choice (4)Response

a.

130

b.

360

c.

300

d.

500

Edit