21.Find the next number in the series 2,4,8,16,32,64...... A) 42 B) 48 C) 128 D) 126 View Answer Report DiscussAnswer: Option CExplanation:Multply by constant. 2 multiply by 2 is 4 4 multipy by 2 is 8 and so on.$64\times 2$ is $128$
22.FInd the number in the series 10,15,19,22,24.... A) 20 B) 25 C) 29 D) 32 View Answer Report DiscussAnswer: Option BExplanation:Series with decreasing difference. Differece between 10&15 is 5 ,15 & 19 is 4 and so on.Differece between 24 and 22 is 2.So, the next differece will be 1 and the number is 24+1 = 25
23.Find the next number in the series 2,3,5,8,12,17,23.... A) 30 B) 25 C) 28 D) 32 View Answer Report DiscussAnswer: Option AExplanation:Series with increasing difference. Difference between 2&3 is 1.Between 3&5 is 2 and so on.Between 17 and 23 is 6.So, the next difference is 7 and the number is 23+7=30.
24.Find the next number in the series 1,4,7,10,13..... A) 11 B) 14 C) 16 D) 17 View Answer Report DiscussAnswer: Option CExplanation:Each number have the constant difference Number difference between each number is 3.So, next numbershould be 13+3 = 16
