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Number System

Number System
Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is:

4
5
6
10

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Number System
A bag contains eighteen 25-paise coins, seventeen 50-paise coins, twentytwo one-rupee coins, nine 2-rupee coins and three 5-rupee coins. What is the total amount in the bag (Ans in rupees) ?

Rs. 68
Rs. 74
Rs. 62
Rs. 79

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Total = 18/7 + 17/2 + 22 + 9 x 2 + 3 x 5         = 4.5 + 8.5 + 22 + 18 + 15         = Rs 68

Number System
(800 / 64) * (1296 / 36) = ?

420
None of these
460
500

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Given Exp.= 800/64 * 1296/36 = 12.5 * 36 = 450

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?

65
34
78
23

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

65

Number System
The Twenty-First Century will start on January 1 in the year

2101
2100
2000
2001

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

2001

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:

None of these
30
40
20

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