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Number System

Number System
In how many different ways can the letters of the word TEST' be arranged ?

8
12
16
10

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

The word TEST consists of 4 letters in which T comes twice ∴ Number of arrangements= 4!/2! = 4 x 3 x 2 x 1/2 x 1 = 12

Number System
1089/? = ?/1296

1188
1082
1278
1348

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(?)² = 1089 x 1296(?)²= (11 x 11 x 9) x (12 x 12 x 9)(?)= 11 x 12 x 9= 1188

Number System
(164 x 175) x ? = 258300

11
2
9
5

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 258300 / 164 x 175 = 9

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

39
33
31
35

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
On converting the following base-2 numeral in base ten, 1101101, we get

108
106
109
107

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

109

Number System
93296 - 45874 + 20382 - 56817 = ?

109857
109887
109877
109867

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 113678 - 102691 = 109887

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