Question
In a class of 40 students, Monika is 13th
from the left and Rakesh is 32th from the right end. How many students are there between Monika and Rakesh?Solution
Rakesh’s position from left = 40 – 32 + 1 = 8 + 1 = 9th Monika’s position from left = 13th Clearly, there are 3 students in between Monika and Rakesh.
7, 26, 238, 962, 8522, 34078
12                          13                         30                     �...
14Â Â Â 42Â Â Â Â 105Â Â Â Â 210Â Â Â Â Â 315Â Â Â ?
8      24       48      144      ?     864
...Find sum of first n terms: 2 + 6 + 12 + 20 + 30 + …
6Â Â Â Â Â Â Â Â Â Â Â Â Â Â 3Â Â Â Â Â Â Â Â Â Â Â Â Â Â 24Â Â Â Â Â Â Â Â Â Â Â 218Â Â Â Â Â Â Â Â Â 3486Â Â Â Â Â Â Â 43575
10      �...
Which of the following is true about the relation between the wrong numbers in the following series?
I: 10, 18, 29, 40, 54, 70
II: 15, 24,...
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
4 7 6
15 ? 21
44 68 60
100Â Â Â Â 221Â Â Â Â 77Â Â Â Â 245Â Â Â Â 50Â Â Â 275
22   39    58    81   ?      141
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