Question
The average age of three children is 20 years. If their
ages are in the ratio 1:2:3. Find the age of the youngest child.Solution
Total age of three children = 20 × 3 = 60 years Let their ages be x, 2x and 3x respectively. => x + 2x + 3x = 60 => 6x = 60 => x = 10 Therefore the age of youngest child = 1 × 10 = 10 years
79, 248, ?, 225, 125, 206
10, ?, 50, 100, 250, 500
11          20          ?             64          112        192
...Choose the missing term.
3F, 6G, 11I, 18L,?
18, 54, ? , 1890, 17010, 187110
What will come in place of the question mark (?) in the following series?
22, 25, 30, 37, 48, ?
What will come in place of the question mark (?) in the following series?
112, 124, 138, 154, ?, 196
What value should come in the place of (?) in the following number series?
54, 81, 135, 216, 324, ?
What will come in place of the question mark (?) in the following series?
3, 8, 18, 38, ?, 158
11Â Â Â Â Â Â Â Â Â Â 22.5Â Â Â Â Â Â Â 47Â Â Â Â Â Â Â Â Â Â 102Â Â Â Â Â Â Â Â 236Â Â Â Â Â Â Â Â ?
...
