RRB ALP 2018 Practice Test Papers | Arithmetic Questions (Day-2)

Dear Aspirants, Here we have given the Important RRB ALP & Technicians Exam 2018 Practice Test Papers. Candidates those who are preparing for RRB ALP 2018 can practice these Arithmetic Questions to get more confidence to Crack RRB 2018 Examination.

[WpProQuiz 1441]

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1. If (a + 1/a)² = 3, then the value of a³ + 1/a³ is—

(A) 0

(B) 9

(C) 3√3

(D) √3

2. 8, 10, 14, 18, (……), 34, 50, 66

(A) 24

(B) 25

(C) 26

(D) 27

3. If 40% of 3/4 of 4/5 of some number is 48, what would be the value of 1 per cent of that number?

(A) 1

(B) 2

(C) 10

(D) 20

4. What would be the value of log 9, if log 27 = 1·431?

(A) 0·934

(B) 0·945

(C) 0·954

(D) 0·958

5. The sum of first 8 terms of a geometric progression is 6560 and common ratio is 3. The first term will be—

(A) 1

(B) 2

(C) 3

(D) 4

6. A cricketer has some average of runs till 16 innings. He scored 85 runs in his 17^th innings. Then his average increased by 3 runs. What is average of runs after 17^th innings?

(A) 42

(B) 46

(C) 34

(D) 37

7. What is the sum of all the internal angles of a polygon with ‘8’ sides?

(A) 360^o

(B) 180^o

(C) 720^o

(D) 1080^o

8. 1, 2, 6, 15, 31, 56,?

(A) 65

(B) 85

(C) 90

(D) 92

9. Average age of P and Q is 42 years and average age of R and S is 52 years. What is the average of ages of P, Q, R and S?

(A) 49 years

(B) 53 years

(C) 51 years

(D) 47 years

10. If p is even and q is odd, then which of the following will necessarily be odd?

(A) p × q

(B) p + 2q

(C) p + q

(D) 2p + 2q

Answers:

1. Answer: A

Explanation:

(a + 1/a)=√3

(a + 1/a)³ = a³ + 1/a³ + 3(a + 1/a)

=3√3-3√3=0

2. Answer: C

Explanation:

3. Answer: B

Explanation:

40/100*3/4*4/5*x=48

X=200

1 % of x= 2

4. Answer: C

Explanation:

log 27 = 1og 3³

3·log 3 = 1·431

⇒ log 3 = 1·431/3

∴ log 9 = log 3² = 2 log 3 = 2 × 1·431/3 = 2·862/3 = 0·954

5. Answer: B

Explanation:

First term of geometric progression = a

Sum of eight terms G. P. = a (3⁸ – 1) / (3 – 1) = 6560

∴ a = 2 × 6560/ (3⁸ – 1) = 2 × 6560 / (6561 – 1) = 2

6. Answer: D

Explanation:

Rise in average after 17^th innings = 3 × Total increase in runs after 17^th innings = 3 × 17 = 51

The player scored 85 runs in 17^th innings.

∴ His average of runs till 16^th innings = 85 – 51 = 34

∴ Average of all 17 innings = 34 + 3 = 37

7. Answer: D

Explanation:

Sum of all interior angles of a polygon of ‘n’ sides is (n–2) × 180^o.

So, for ‘8’ sides, it is 6 × 180^o = 1080^o.

8. Answer: D

Explanation:

9. Answer: D

Explanation:

Sum of ages of P and Q = 42 × 2 = 84 years.

Sum of ages of R and S = 52 × 2 = 104 years.

So, average of ages of P, Q, R and S = (84+104)/4=47

10. Answer: C

Explanation:

p × q = even × odd = even

p + 2q = even + 2 × odd (even) = even

p + q = even + odd = odd

2p + 2q = 2 × even (even) + 2 × odd (even) = even

RRB ALP 2018 Practice Test Papers | Arithmetic Questions (Day-1)