Number System The average of five consecutive even numbers, p, q, r, s and t is 40. What is the product of 'r' and 's' ? 1680 1580 1780 1480 1680 1580 1780 1480 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x, x + 2, x + 4, x + 6, and x + 8Avg = x + x + 2 + x + 4 + x + 6 + x + 8/5 = 40Therefore, 5x + 20 = 200Therefore, x = 180/5 = 36Therefore, r = x + 4 = 40 s = x + 6 = 42Therefore, Product = 1680
Number System A laborer is engaged for 30 days on the condition that he receives Rs.25 for each day he works and is fined Rs.7.50 for each day is absent. He gets Rs.425 in all. For how many days was he absent? 6 10 9 8 6 10 9 8 ANSWER DOWNLOAD EXAMIANS APP
Number System In how many different ways can the letters of the word "MOBILIZE" be arranged ? 19765 20160 17453 18456 19765 20160 17453 18456 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word MOBILIZE has eight letters in which I comes twice ∴ Number of arrangements = 8!/2! = 20160
Number System What number should replace both the question marks (?) in the following question ? 82 83 84 85 82 83 84 85 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 84
Number System 4500 * ? = 3375 1/4 3/5 2/5 3/4 1/4 3/5 2/5 3/4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4500 * x = 3375= x = 3375/4500 = 3/4
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