Number System Which one of the following represents the sum of the first n even numbers? N2 N(N – 1) N(N + 1) N2+ 1 N2 N(N – 1) N(N + 1) N2+ 1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP N (N + 1)
Number System Ratio between two numbers is 3: 4 and their sum is 420. Find the smaller number? 180 160 240 140 180 160 240 140 ANSWER DOWNLOAD EXAMIANS APP
Number System The product of two consecutive odd numbers is 4623. What is the product of the next two consecutive odd numbers ? 6782 5183 8795 7745 6782 5183 8795 7745 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √4623 = 6767 x 69 = 4623∴ Required product = 71 x 73 = 5183
Number System What should come in the place of ' ? ' in the following number series ? 2, 5, 9, 19, 37, ? 77 78 76 75 77 78 76 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2 x 2 + 1 = 5;5 x 2 - 1 = 99 x 2 + 1 = 19: 19 x 2 - 1 = 3737 x 2 + 1 = 75
Number System 486+32×25—59=? 582 596 528 567 582 596 528 567 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 528
Number System Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is: 4 5 6 10 4 5 6 10 ANSWER DOWNLOAD EXAMIANS APP
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