Number System If the sum of 4 consecutive odd numbers is 104, what will be the third number if they are arranged in ascending order ? 29 27 30 28 29 27 30 28 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the consecutive odd number be x, x + 2, x + 4 and x + 6 respectively.According to the question x + x + 2 + x + 4 + x + 6 = 104 = 4x + 12 = 104 = 4x = 104 - 12 = 92∴ x = 92/4 = 23∴ Required number = x + 4= 23 + 4 = 27
Number System A basket contains 5 blue, 4 green and 3 red ball. If three balls are picked at random, what is the probability that at least one is red ? 37/52 32/51 31/58 34/55 37/52 32/51 31/58 34/55 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Probability of having no red ball is9C3 / 12C3 = 21/55Probability of having at least one red ball is 1 - 21/55 = 34/55
Number System Find the least number which when divided by 35 and 11 leaves a remainder of 1 in each case. 388 386 384 391 388 386 384 391 ANSWER DOWNLOAD EXAMIANS APP
Number System What is the difference between the largest number and the least number written with the digits 7, 3, 1, 4? 5084 6084 6184 6048 5084 6084 6184 6048 ANSWER DOWNLOAD EXAMIANS APP
Number System In how many different ways can the letters of word "SENTENCE" be arranged ? 2360 6460 3260 3360 2360 6460 3260 3360 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 8!/3! 2! = 40320/12 = 3360
Number System What number should come in the place of (?) in the following number series ? 1, 4, 9, 25, 49, ?, 169, 289, 361 121 11 321 225 121 11 321 225 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The series is (Prime No.)²So it is (11)² = 121
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