Number System (12.04 x 7.5 + 0.8 x 45) ÷ 3 = ? 42.1 54.7 42.6 45 42.1 54.7 42.6 45 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (90.3 + 36) ÷ 3 = 126.3/3 = 42.1
Number System In how many different ways can the letters of the word ANATOMY be arranged ? 2510 2504 2520 2508 2510 2504 2520 2508 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Here total letters are 7 but A comes twice.Therefore, Numbers of arrangements = 7!/2! = 2520
Number System {3√4913}² = ? 225 289 121 333 225 289 121 333 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = (3√4913)² = (17)² = 289
Number System Simplify the 121 * 175 + 363 * 275 328100 None of these 363000 316600 328100 None of these 363000 316600 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 121 * 175 + 363 * 275 => 121 * 175 + 121 * 3 * 275121 * 175 + 121 * 825= 121 * (175 + 825) = 121000
Number System How many numbers up to 100 are divisible by 7? 107 93 14 100 107 93 14 100 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 100/7 = 14 2/7 => 14 Numbers
Number System A bag contains four red, six black and seven green balls. Three balls are drawn randomly. What is the probability that the balls drawn contain exactly two red balls ? 39/340 58/340 51/340 45/340 39/340 58/340 51/340 45/340 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total balls = 4 + 6 + 7 = 17∴ n(S) = 17C1 = 680Two red balls can be selected from four red balls in 4C2 = 6 ways.and the third ball can be selected from the remaining 13 balls in 13C1 = 13 ways.∴ P (E) = 13x6/680 = 39/340
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