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Number System

Number System
(164 x 175) x ? = 258300

9
11
5
2

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 258300 / 164 x 175 = 9

Number System
75% of 250 - ?% of 380 = 54.5

31
33
35
39

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

250 x 75/100 - 380 x ?/100 = 54.5= 250 x 75 - 380 x ?= 54.5 x 100= 18750 - 380 x ?= 5450= 380 x? = 18750 - 5450= 13300= ? = 13300/380 = 35

Number System
If the difference between a number and its 2/5 is 240, find the number.

400
480
440
360

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be x Therefore x - 2x/5 = 240,        Therefore, 3x/5 = 240Therefore, x = 240x5/3 = 400

Number System
If (47)² is added to the square of a number the answer thus obtained is 2290. What is the number ?

10
8
7
9

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be x Therefore, x² + (47)² = 2290Therefore, x² = 2290 - 2209 = 81Therefore, x = 9

Number System
How many numbers between 300 and 800 can be by using digits 2, 4, 5, 6 and 0 ?

56
36
48
52

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

∴ Reqd . numbers = 3 x 4P2 = 3 x 12 = 36

Number System
74698 + 365 + 85213 + 95 = ?

160361
160341
160351
160371

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 74698 + 365 + 85213 + 95 = 160371

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