Number System 9 3/4 + 7 2/17 - 9 1/15 = ? 7 817/1020 9 719/1020 7 719/1020 9 817/1020 7 817/1020 9 719/1020 7 719/1020 9 817/1020 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given sum = 9 + 3/4 + 7 + 2/17 - (9 + 1/15)= (9 + 7 - 9) + (3/4 + 2/17 - 1/15)= 7 + (765 + 120 - 68)/1020 = 7 817/1020
Number System A basket contains 5 blue, 4 green and 3 red ball. If three balls are picked at random, what is the probability that at least one is red ? 34/55 32/51 37/52 31/58 34/55 32/51 37/52 31/58 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Probability of having no red ball is9C3 / 12C3 = 21/55Probability of having at least one red ball is 1 - 21/55 = 34/55
Number System In how many different ways can the letters of the word "MOBILIZE" be arranged ? 17453 20160 18456 19765 17453 20160 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 How many numbers up to 100 are divisible by 7? 93 14 100 107 93 14 100 107 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 100/7 = 14 2/7 => 14 Numbers
Number System If 1.5 x= 0.04 y, then the value of (y-x) (y+x) is: 83/77 73/77 77/73 93/77 83/77 73/77 77/73 93/77 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 73/77
Number System 56.21 +2.36+5.41 —21.4+1.5=? 64.08 44.08 34.08 54.08 64.08 44.08 34.08 54.08 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 44.08
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