Number System In how many different ways can the letters of the word 'LEASE' be arranged ? None of these 40 60 80 None of these 40 60 80 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The world LEASE consists of 5 letters in which E comes twice ∴ 51/21 = 5x4x3x2x1/2x1 = 60
Number System The product of two consecutive position odd numbers is 6723. What is the smaller number? 71 74 79 83 71 74 79 83 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP n x (n + 2) = 6723= n² + 2n - 6723 = 0= n² + 83n - 81n - 6723 = 0= n(n + 83) - 81 (n + 83) = 0Therefore, (n - 81) (n + 83) = 0Therefore, n = 81, n + 2 = 83
Number System What least number shall be added to 4700 to make it a perfect square ? 71 91 61 81 71 91 61 81 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (69)² = 4761 and (68)² = 4624Clerly 4624 < 4700 < 4761So 61 should be added to make 4700 a perfect square.
Number System Complete the series : 11, 12, 17, 18, 23, 24 ... 12 30 None of these 14 12 30 None of these 14 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP None of these
Number System In how many different ways can the letters of the word TEST' be arranged ? 8 12 16 10 8 12 16 10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word TEST consists of 4 letters in which T comes twice ∴ Number of arrangements= 4!/2! = 4 x 3 x 2 x 1/2 x 1 = 12
Number System 384×12×2=? 9216 8465 6123 7487 9216 8465 6123 7487 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9216
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