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Number System

Number System
The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is:

30
40
20
None of these

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Number System
9 3/4 + 7 2/17 - 9 1/15 = ?

9 719/1020
9 817/1020
7 817/1020
7 719/1020

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Given sum = 9 + 3/4 + 7 + 2/17 - (9 + 1/15)= (9 + 7 - 9) + (3/4 + 2/17 - 1/15)= 7 + (765 + 120 - 68)/1020 = 7 817/1020

Number System
Three times the first of three consecutive odd integers is 3 more than twice the third. The third integer is:

9
15
11
13

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Let the three integers be x, x + 2 and x+ 4.Then,3x = 2(x + 4) + 3x = 11Third integer = x + 4 = 15.

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

3360
6460
2360
3260

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

Number System
Which choice provides the answer : If 2 + 3 = 10, 6 + 5 = 66, 7 + 2 = 63, 9 + 7 = 144 then, 8 + 4 = ?

88
114
96
102

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

96

Number System
What is the missing number in this series? 8 2 14 6 11 ? 14 6 18 12

9
3
7
2

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

9

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