Number System If 70% of an equal to 40% of b, then ratio between a and b is? 7: 11 4: 7 None 7: 4 7: 11 4: 7 None 7: 4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 70 a = 40 ba: b = 4: 7
Number System A certain number of two digits is three times the sum of its digits. If 45 be added to it, the digits are reversed. The number is: 27 30 24 22 27 30 24 22 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 27
Number System What is the remainder when 263251 is divided by 9? 6 8 1 3 6 8 1 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP If the sum of the digits of a number is divisible by 9, the number will be divisible by 9.2 + 6 + 3 + 2 + 5 + 1 = 19The nearest multiple of 9 is 18.19 - 18 = 1.
Number System In how many different ways can the letters of the word 'LEASE' be arranged ? 60 80 None of these 40 60 80 None of these 40 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The world LEASE consists of 5 letters in which E comes twice ∴ 51/21 = 5x4x3x2x1/2x1 = 60
Number System How many times the keys of a typewriter have to be pressed in order to write first 400 counting numbers? 1200 1082 1192 1092 1200 1082 1192 1092 ANSWER DOWNLOAD EXAMIANS APP
Number System 1089/? = ?/1296 1082 1278 1188 1348 1082 1278 1188 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
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