Question
48 pens are there in a box where 22 are red pens,
‘p’ are blue pens and remaining are black pens. If a pen is picked, the probability of getting blue pen is 0.25. Find the ratio of the number of blue pens and black pens.Solution
Probability of getting a blue pen , => p/48 = 1/4 => p = 12 So, number of black pens = 48 – 22 – 12 = 14 Required ratio = 12 : 14 = 6:7
Find the missing number in the given number series.
2, 5, 16, 65, 326, ?43, 56, 82, ?, 173, 238
What will come in place of the question mark (?) in the following series?
12, 13, 22, 47, 96, 177, ?
What will come in place of the question mark (?) in the following number series?
180, 184, 168, 204, ?, 240
9 14 38 129 ? 2705 16260
...Find the missing number in the given number series.
4, ?, 110, 665, 4660, 37285
74, 84, 64, 104, ?, 184
What value should come in the place of (?) in the following number series?
1.5, 2.5, 4, 6, ?, 11.5
12 48 192 ? 3072 12288
...166 156 136 ? 66 16
