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Number System

Number System
7.98 x 3.75 + 1.28 x 15.5 = ?

48.765
47.765
46.765
49.765

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 29.925 + 19.84 = 49.765

Number System
Find the least value of 3x + 4y if x2y3 = 6.

3
6
7
10

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

10

Number System
Given √2 = 1.414, the value of √8 + 2√32 - 3√128 + 4√50 is

8.684
8.484
8.584
8.784

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

8.484

Number System
What is the sum of 1 + 2 + 3+ ... + 27 ?

396
382
378
343

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Sum = 27 x (27 + 1)/2= 27 x 28/2= 27 x 14= 378

Number System
What is the greater of the two numbers whose product is 2560, given that the sum of the two numbers exceeds their difference by 64?

100
None of these
110
90

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the greater and the smaller number be g and s respectively.gs = 2560g + s exceeds g - s by 64 i.e., g + s - (g - s) = 64i.e., 2s = 64 => s = 32.g = 2560/s = 80.

Number System
Sum of two numbers is 15. Two times of the first exceeds by 5 from the three times of the other. Then the numbers will be?

9, 6
6, 9
10, 5
7, 8

ANSWER DOWNLOAD EXAMIANS APP
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