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 7, 8 10, 5 6, 9 9, 6 7, 8 10, 5 ANSWER DOWNLOAD EXAMIANS APP
Number System If (74)² is added to the square of a number the answer so obtained is 7780. What is the number ? 47 50 48 49 47 50 48 49 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.or, x² + (74)² = 7780or, x² = 7780 - 5476 = 2304∴ x = 48
Number System What is the sum of all the prime numbers from 20 to 40? 117 118 119 120 117 118 119 120 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 23 + 29 + 31 + 37 = 120
Number System What number should come in the place of (?) in the following number series ? 1, 4, 9, 25, 49, ?, 169, 289, 361 121 225 321 11 121 225 321 11 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The series is (Prime No.)²So it is (11)² = 121
Number System In how many different ways can be the letters of the word PENCIL be arranged among themselves ? 510 640 860 720 510 640 860 720 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 On converting the following base-2 numeral in base ten, 1101101, we get 107 108 106 109 107 108 106 109 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 109
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