Number System 732.96 + 405.38 - 604.08 - 105.44 + 222.86 = ? 631.68 641.68 621.68 651.68 631.68 641.68 621.68 651.68 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 1361.20 - 709.52 = 651.68
Number System What is the sum of all even numbers from 1 to 701? 122850 123850 122500 122550 122850 123850 122500 122550 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 700/2 = 350350 * 351 = 122850
Number System If (35)² is added to the square of a number the answer so obtained is 1394. What is the number ? 15 11 17 13 15 11 17 13 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x Therefore, x² + (35)² = 1394Therefore, x² = 1394 - (35)² = 1394 - 1225 = 169Therefore, x = √169 = 13
Number System In how many different ways can the letters of word "SENTENCE" be arranged ? 2360 3260 6460 3360 2360 3260 6460 3360 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 8!/3! 2! = 40320/12 = 3360
Number System If a + b = 16 and ab = 68, what is the value of a² + b² ? 120 124 112 116 120 124 112 116 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP a + b = 16 Therefore, (a+b)² = (16)² = 256 a² + b² + 2ab = 256Therefore, a² + b² = 256 - 2 x 68Therefore, a² + b² = 256 - 136 = 120
Number System What is the sum of all the composite numbers up to 20? 128 132 131 130 128 132 131 130 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4 + 6 + 8 + 9 + 10 + 12 + 14 + 15 + 16 + 18 = 132
EXAMIANS