Mental Ability-Basic Arithmetic (NCO- Cyber Olympiad Class 9): Questions 44 - 49 of 49

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Question number: 44

» Mental Ability » Basic Arithmetic

MCQ▾

Question

The sum of two angles of a triangle is 106° and their difference is 10°, find all the angles of the triangle

Choices

Choice (4) Response
a.

48°, 58°, 74°

b.

50°, 40°, 90°

c.

30°, 60°, 90°

d.

40°, 50°, 90°

Question number: 45

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Find the measure of all the angles of parallelogram, if one angle is 60 ° less than twice the smallest angle.

Choices

Choice (4) Response
a.

60°, 120°, 60°, 120°

b.

68°, 112°, 68°, 112°

c.

80°, 100°, 80°, 100°

d.

36°, 144°, 36°, 144°

Question number: 46

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Find the measure of all the angles of parallelogram, if one angle is 45° less than twice the smallest angle.

Choices

Choice (4) Response
a.

75°, 105°, 75°, 105°

b.

40°, 140°, 40°, 140°

c.

85°, 95°, 85°, 95°

d.

65°, 115°, 65°, 115°

Question number: 47

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Find the measure of all the angles of parallelogram, if one angle is 24° less than twice the smallest angle.

Choices

Choice (4) Response
a.

60°, 120°, 60°, 120°

b.

66°, 114°, 66°, 114°

c.

68°, 112°, 68°, 112°

d.

56°, 124°, 56°, 124°

Question number: 48

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Given 2=1.414 , 3=1.732 , 5=2.236 and 6=2.449 find the value of the following expression correct up to three places of decimal: 1+25+3+1253 .

Choices

Choice (4) Response
a.

-0.413

b.

0.213

c.

-0.213

d.

0.413

Question number: 49

» Mental Ability » Basic Arithmetic

MCQ▾

Question

The bacteria in a culture grows by 10 % in the first hour, decreases by 10 % in the second hour and again increases by 10 % in the third hour. If at the end of the third hour the count of bacteria is 30000. The original count of bacteria in the sample is________

Choices

Choice (4) Response
a.

32870

b.

32670

c.

32970

d.

32770

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