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Number System

Number System
728.038 x 54.978 - 72.016 x 85.250 = ?

43900
23900
53900
33900

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 728 x 55 - 72 x 85.25 = 40040 - 6138 = 339900

Number System
If (182)² is added to the square of a number, the answer so obtained is 47765. What is the number ?

101
131
111
121

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be xTherefore x² + (182)² = 47765Therefore x² = 47765 - (182)2                        = 47765 - 33124Therefore x² = 14641,                Therefore x = 121

Number System
The digit in unit's place of a three digit number is thrice the digit in ten's place & the digit in hundred's place is two-third of the digit in ten's place. If the sum of three digits of number is 14

239
215
221
211

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the ten's digit be x.∴ Unit's digit = 3xHundered's digit = 2x/3∴ x + 3x + 2x/3 = 14= 3x + 9x + 2x = 14 x 3= 14x = 14 x 3= x = 3∴ Number = 239

Number System
If (83)² is subtracted from the square of a number, the answer so obtained is 8487. What is the number ?

179
146
124
163

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x Therefore, x² - (83)² = 8487x² = 8487 + (83)²x² = 8487 + 6889x²   = 15376Therefore, x² = 15376                    x = 124

Number System
Find the nearest to 25268 which is exactly divisible by 467?

25228
25208
25308
25218

ANSWER DOWNLOAD EXAMIANS APP

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

7
10
6
3

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

10

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