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Number System

Number System
1256+4813+765=?

6836
6834
6831
6839

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

1256+4813+765= 6069+765=6834

Number System
What least number must be subtracted from 2641 so that the remainder left, when divided by 10,15 and 25, is 7 in each case ?

87
94
84
81

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

LCM of 10, 15, 25 = 150When we drive 2641 by 150 the remainder is 91.But the remainder should be 7.So, the number to be subtracted from 2641 is 91 - 7 = 84.

Number System
The population of a town increases by 15% in the first year and decreases by 25% in the second year. If its current population is 168480 then what will be its population after two years ?

145914
145714
145214
145314

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Population of the town= 168480 x 115/100 x 75/100= 145314

Number System
Complete the series : 81, 69, 58, 48, 39 ........

31
28
30
29

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

31

Number System
The average of five consecutive even numbers, p, q, r, s and t is 40. What is the product of 'r' and 's' ?

1580
1680
1480
1780

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the numbers be x, x + 2, x + 4, x + 6, and x + 8Avg = x + x + 2 + x + 4 + x + 6 + x + 8/5 = 40Therefore, 5x + 20 = 200Therefore, x = 180/5 = 36Therefore, r = x + 4 = 40                                 s =  x + 6 = 42Therefore, Product = 1680

Number System
What is the difference between the local values of 3 in the number 53403?

3003
0
3030
2997

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

3000 – 3 = 2997

MORE MCQ ON Number System

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