Practice MCQ Questions and Answer on Number System

Arrangement of the fractions $\frac{4}{3}, - \frac{2}{9}, - \frac{7}{8}, \frac{5}{12}$ ÃÂÃÂ ÃÂÃÂ into ascending order:

(A) $- \frac{2}{9}, - \frac{7}{8}, \frac{4}{3}, \frac{5}{12}$
(B) $- \frac{7}{8}, - \frac{2}{9}, \frac{5}{12}, \frac{4}{3}$
(C) $- \frac{7}{8}, - \frac{2}{9}, \frac{4}{3}, \frac{5}{12}$
(D) $- \frac{2}{9}, - \frac{7}{8}, \frac{5}{12}, \frac{4}{3}$

Solution: $\begin{aligned} \frac{4}{3}, \frac{- 2}{9}, \frac{- 7}{8}, \frac{5}{12} \\ \frac{4}{3} = 1.33 \\ \frac{- 2}{9} = - 0.22 \\ \frac{- 7}{8} = - 0.875 \\ \frac{5}{12} = 0.416 \\ So, \frac{- 7}{8}, \frac{- 2}{9}, \frac{5}{12}, \frac{4}{3} \end{aligned}$

884697 - 773697 - 102479 = ?

(A) 8251
(B) 8512
(C) 8521
(D) 8531

A two digit number ab is added to another number ba, which is obtained by reversing the digits then we get three digit number. Thus (a + b) equals to:

(A) at least 18
(B) 2ab
(C) 2(a + b)
(D) (a + b) ≥ 10

A person gives $\frac{1}{4}$ of his property to his daughter, $\frac{1}{2}$ to his sons and $\frac{1}{5}$ for charity. How much has he given away ?

(A) $\frac{1}{20}$
(B) $\frac{19}{20}$
(C) $\frac{1}{10}$
(D) $\frac{9}{10}$

Solution: Let the property is 'P' units According to the question, Given part, $\begin{aligned} = \frac{1}{4} P + \frac{1}{2} P + \frac{1}{5} P \\ = \frac{5 P + 10 P + 4 P}{20} \\ = \frac{19}{20} P \end{aligned}$ Part of property given away $\frac{19}{20}$

By which number should 0.022 be multiplied so that product become 66 ?

(A) 3000
(B) 3200
(C) 4000
(D) 3600

Solution: $\begin{aligned} Let the number multiplied by x \\ x \times 0.022 = 66 \\ x = \frac{66}{22} \times 1000 = 3000 \end{aligned}$

The sum of three consecutive natural numbers each divisible by 5, is 225. The largest among them is?

(A) 85
(B) 75
(C) 70
(D) 80

If the arithmetic mean of 3a and 4b is greater than 50, and a is twice b, then the smallest possible integer value of a is:

(A) 20
(B) 21
(C) 18
(D) 19

Solution: $\begin{aligned} According to the question, \\ \frac{3 a + 4 b}{2} > 50 \\ 3 a + 4 b > 100 \\ a = 2 b (Given) \\ 6 b + 4 b > 100 \\ 10 b > 100 \\ b > 10 \\ If b = 10.1 \\ ∴ a = 2 \times 10.1 \\ a = 20.2 \\ ∴ a = 21 (Approx) \end{aligned}$

The number of factors of 3600 is:

(A) 45
(B) 44
(C) 43
(D) 22

In an examination, a student scores 4 marks for every correct answer and losses 1 mark for every wrong answer. A student attempted all the 200 questions and scored 200 marks. The number of questions, he answered correctly was -

(A) 82
(B) 80
(C) 68
(D) 60

10.

If n is any positive integer, 3⁴ⁿ - 4³ⁿ is always divisible by :

(A) 7
(B) 12
(C) 17
(D) 145

«
1
2
3
4
5
6
7
8
9
10
...
67
68
Next ›
Last »

Indian Polity Mcq IAS GK Question India GK World GK GK questions GK Quiz Biology GK Science GK Physics GK Chemistry GK General Awareness Computer GK Political GK Indian Political GK Economics GK History GK Sports GK Geography GK Teaching Aptitude GK CTET/TET GK B Ed Entrance GK Banking GK SSC GK UPSC GK Indian Army GK Hindi Grammar GK Hindi Grammar MCQ Reasoning questions Bihar GK Rajasthan GK Jharkhand GK MP GK UP GK Chhattisgarh GK Haryana GK HP GK Maharashtra GK Electronics GK Agriculture GK States/Capitals GK Books Name & Author Arthimetic Verbal Reasoning Non Verbal Reasoning English

Practice MCQ Questions and Answer on Number System

General Knowledge