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Number System

Number System
How many numbers up to 100 and 300 are divisible by 11?

21
22
18
20

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(300 – 100)/11 = 200/11 = 18 2/1118 Numbers

Number System
In how many ways can 5 boys be chosen from 6 boys and 4 girls so as to include exactly one girl ?

58
54
60
56

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

One girl can be chosen in 4C1 = 4 ways and 4 boys can be chosen in 6C4 = 15 ways ∴ Total number of ways = 4 x 15 = 60 ways.

Number System
If the following fractions 7/6, 6/7, 5/3, 8/13 and 6/5 are arranged in descending order, which will be the last in the series?

6/13
7/13
8/13
9/13

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

7/6 = 1.166, 6/7 = 0.857,5/3 = 1.66,8/13 = 0.615,6/5 = 1.2Therefore, 5/3 > 6/5 > 7/6 > 6/7 > 8/13

Number System
5358 * 51 = ?

273268
273348
273258
273358

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

5358 * 51 = 5358 * (50 + 1) = 5358 * 50 + 5358 * 1= 267900 + 5358 = 273258

Number System
(800 / 64) * (1296 / 36) = ?

420
460
500
None of these

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Given Exp.= 800/64 * 1296/36 = 12.5 * 36 = 450

Number System
7.8% of 12.5 + 2.5% of 161 = ?

5
2
9
12

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

7.8 x 12.5/100 + 2.5 x 161/100= 0.975 + 4.025= 5

MORE MCQ ON Number System

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