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Number System

Number System
In how many different ways can the letters of word "SENTENCE" be arranged ?

2360
6460
3360
3260

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Number of ways = 8!/3! 2! = 40320/12 = 3360

Number System
The difference of two numbers is 1365. On dividing the larger number by the smaller, we get 6 as quotient and 15 as remainder. What is the smaller number?

270
360
295
240

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the smallest number be x.Then larger number = (x + 1365)x + 1365 = 6x + 15= 5x = 1350 x = 270Smaller number = 270.

Number System
When the square of a number is substracted from (68)², the answer so obtained is 2508. What is the number ?

46
45
47
44

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(68)² - x² = 2508Therefore, x² = 4624 = 2508Therefore, x = root of 2116 = 46

Number System
[(18.6 x 4.5) + (7.8 ÷ 0.24)] ÷ 3.2 = ?

26.3125
46.3125
25.3125
36.3125

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 83.7 + 32.5/3.2 = 116.2/3.2 = 36.3125

Number System
If the sum of the two numbers is 22 and the sum of their squares is 404, then the product of the numbers is:

40
88
44
80

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the numbers be x and y. Then, (x + y) = 22 and x2 + y2 = 404 Now, 2xy = (x + y)2 - (x2 + y2) 2xy= 222 - 404 = 484 - 404 = 80xy = 40

Number System
Difference between two numbers is 5, six times of the smaller lacks by 6 from the four times of the greater. Find the numbers?

12, 7
10, 5
11, 6
12, 9

ANSWER DOWNLOAD EXAMIANS APP
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