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Number System

Number System
Three numbers are in ratio of 3: 4 :5. If the sum of first & third numbers is more than second number by 52, which will be largest number?

23
34
65
78

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

65

Number System
If the difference between the squares of two consecutive numbers is 47, what is the smaller number ?

24
25
26
23

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the numbers be (x + 1) and x.Therefore, (x + 1)² - x² = 47x² + 2x + 1 - x² = 472x + 1 = 47Therefore, x = 46/2 = 23

Number System
If one third of 3/4 of a number is 21. Then find the number?

840
84
63
630

ANSWER DOWNLOAD EXAMIANS APP

Number System
A canteen requires 17 dozen of eggs per week. How many eggs will it require from January 1 to February 11 ?

1224
525
820
987

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Number of days from Jan 1 to Feb 11th= 31 + 11 = 42 days = 6 weeks∴ Total eggs  =17 x 12 x 6 = 1224

Number System
In an examination, 68% of the total examinees passed. If the number of failures is 248, the total number of examinees is

640
775
750
725

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Failed students are 32% which is 248.∴ Total = 24800/32 = 775

Number System
{(742)² ÷ 36} ÷ 2 = ?

421.5
423.5
420.5
422.5

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = (174 x 174/36) ÷ 2 = 841/2 = 420.5

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