Number System What is the sum of all the prime numbers from 20 to 40? 119 118 120 117 119 118 120 117 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 23 + 29 + 31 + 37 = 120
Number System Find the number of factors of 300 excluding 1 and itself. 16 14 15 18 16 14 15 18 ANSWER DOWNLOAD EXAMIANS APP
Number System On converting the following base-2 numeral in base ten, 1101101, we get 108 106 107 109 108 106 107 109 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 109
Number System In how many different ways can the letters of the word "MOBILIZE" be arranged ? 20160 17453 18456 19765 20160 17453 18456 19765 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word MOBILIZE has eight letters in which I comes twice ∴ Number of arrangements = 8!/2! = 20160
Number System If the sum of one-half of a number exceeds one-third of that number by 7 1/3, the number is: 15 30 20 18 15 30 20 18 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,(1/2 x + 1/5 x) - 1/3 x = 22/311/30 x = 22/3x = 20
Number System If the difference between a number and its 2/5 is 240, find the number. 440 400 360 480 440 400 360 480 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore x - 2x/5 = 240, Therefore, 3x/5 = 240Therefore, x = 240x5/3 = 400
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