Number System In how many different ways can the letters of the word 'DETERMINE' be arranged ? 60480 61480 62480 63480 60480 61480 62480 63480 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. of arrangements = 9! / 3! Because, E comes 3 times = 60480
Number System √207.36 = ? 14.4 15.7 12.3 16.7 14.4 15.7 12.3 16.7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √207.36 = √20736/√100 = 144/10 = 14.4
Number System In how many different ways can the letters of word 'BIOLOGY' be arranged ? 2410 2520 2367 2678 2410 2520 2367 2678 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In BIOLOGY total 7 letters are there but O comes twice.∴ Number of arrangements = 7!/2! = 2520
Number System How many numbers between 300 and 800 can be by using digits 2, 4, 5, 6 and 0 ? 48 56 52 36 48 56 52 36 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∴ Reqd . numbers = 3 x 4P2 = 3 x 12 = 36
Number System What least number must be subtracted from 2641 so that the remainder left, when divided by 10,15 and 25, is 7 in each case ? 87 94 84 81 87 94 84 81 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP LCM of 10, 15, 25 = 150When we drive 2641 by 150 the remainder is 91.But the remainder should be 7.So, the number to be subtracted from 2641 is 91 - 7 = 84.
Number System 4.78% of 1255 + 3.24% of 440=0.5% of ? 13849 14849 11849 12849 13849 14849 11849 12849 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.5 x ?/100 = 4.78 x 1255/100 + 3.24 x 440/100= 59.989 + 14.256∴ ? = 74.245 x 100/0.5 = 14849
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