Number System Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number? N2 + 1 N(N + 1)/2 N2 N(N + 1) N2 + 1 N(N + 1)/2 N2 N(N + 1) ANSWER DOWNLOAD EXAMIANS APP
Number System In how many different ways can be the letters of the word PENCIL be arranged among themselves ? 640 510 860 720 640 510 860 720 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total six letters are there and hence the number of arrangements = 6! = 6 x 5 x 4 x 3 x 2 x 1 = 720
Number System Sum of two consecutive even terms lacks by 98 from their product. Find the sum of these number 24 32 18 None 24 32 18 None ANSWER DOWNLOAD EXAMIANS APP
Number System What number should come in the place of (?) in the following number series ? 1, 4, 9, 25, 49, ?, 169, 289, 361 121 11 321 225 121 11 321 225 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The series is (Prime No.)²So it is (11)² = 121
Number System 666 / 6 / 3 = ? 84 333 111 37 84 333 111 37 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 666 * 1/6 * 1/3 = 37
Number System Sum of two numbers is 15. Two times of the first exceeds by 5 from the three times of the other. Then the numbers will be? 6, 9 9, 6 10, 5 7, 8 6, 9 9, 6 10, 5 7, 8 ANSWER DOWNLOAD EXAMIANS APP
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