Number System In how many different ways can the letters of word 'BIOLOGY' be arranged ? 2367 2520 2410 2678 2367 2520 2410 2678 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In BIOLOGY total 7 letters are there but O comes twice.∴ Number of arrangements = 7!/2! = 2520
Number System (4300731) - ? = 2535618 1865113 1775123 1765113 1675123 1865113 1775123 1765113 1675123 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 4300731 - x = 2535618Then, x = 4300731 - 2535618 = 1765113
Number System If (83)² is subtracted from the square of a number, the answer so obtained is 8487. What is the number ? 163 146 124 179 163 146 124 179 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x Therefore, x² - (83)² = 8487x² = 8487 + (83)²x² = 8487 + 6889x² = 15376Therefore, x² = 15376 x = 124
Number System The sum of the numbers is 264. If the first number be twice the second and third number be one-third of the first, then the second number is: 72 84 48 54 72 84 48 54 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the second number be x. Then, first number = 2x and third number = 2x/3.2x + x + 2x/3 = 26411x/3 = 264x = 72
Number System On dividing number by 357, we get 39 as remainder. On dividing the same number by 17, what will be the remainder? 3 5 0 11 3 5 0 11 ANSWER DOWNLOAD EXAMIANS APP
Number System Three seventh of a number is 12 more than 40% of that number. What will be the 60% of that number? 210 248 126 148 210 248 126 148 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/7 x – 40/100 x = 12x = 35 * 1235 * 12 * 60/100 = 252/2 = 126
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