Question
If the third proportion of 30 and 45 is “0.5k”, then
find the value of (k − 18) : (k + 22).Solution
Third proportion of two numbers ‘a’ and ‘b’ is (b²/a).
So, 0.5k = (45²/30) = 67.5
Or, 'k' = 135
Required value = (135 - 18) : (135 + 22) = 117 : 157 = 39 : 52
The following numbers form a series. Find the odd one out.
7, 11, 19, 35, 67, 131
Find the wrong number in the given number series,
54, 58, 67, 92, 139, 262
There are two wrong number series given in question and three relationships has been derived from that you have to answer the correct relationship betwe...
The following numbers form a series. Find the odd one out.
500, 1012, 963, 1185, 1154, 1218
27, 35, 51, 75, 109, 147
216, 432, 144, 288, 96, 191, 64
53, 57, 66, 82, 117, 143, 192
Find the wrong number in the given number series.
70, 94, 130, 182, 274, 406
Find the wrong number in given number series.
136, 184, 250, 304, 376, 456
98, 128, 162, 200, 244, 288
