Number System 7589 - ? = 3434 11023 4242 1123 4155 11023 4242 1123 4155 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 7589 - x = 3434Then x = 7589 - 3434 = 4155
Number System What should come in the place of ' ? ' in the following number series ? 2, 5, 9, 19, 37, ? 77 75 76 78 77 75 76 78 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 What least number should be added to 8602 to make it a perfect square ? 47 36 51 41 47 36 51 41 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP So, (93)² = 8649So, the required number to be added to make a perfect square = 8649 - 8602 = 47
Number System Of an amount, 20% of 25% of 30% is Rs 75. Then what is the original amount ? Rs. 4000 Rs. 3000 Rs. 5000 Rs. 2000 Rs. 4000 Rs. 3000 Rs. 5000 Rs. 2000 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the amount be x.∴ X x 20/100 x 25/100 x 30/100 = 75∴ X = 75 x 5 x 4 x 10/3 = 5000
Number System 732.96 + 405.38 - 604.08 - 105.44 + 222.86 = ? 641.68 631.68 651.68 621.68 641.68 631.68 651.68 621.68 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 1361.20 - 709.52 = 651.68
Number System If A + B = 30 and AB = 94, What is the value of A² + B² ? 824 712 920 625 824 712 920 625 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (A + B)² = (30)² = 900A² + B² + 2AB = 900Therefore, A² + B² = 900 - 2 x 94 = 900 - 188 = 712
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