Question
The ratio of age of βBβ after 6 years from now and
age of βCβ 4 years ago from now is 7:4, respectively. The present age of βCβ is 40% of the present age of βAβ. If present age of βAβ is 50 years then find the present age of βBβ.Solution
Present age of βCβ = 0.4 Γ 50 = 20 years 4 years ago from now, age of βCβ = 20 β 4 = 16 years 6 years hence from now, age of βBβ = 16 Γ (7/4) = 28 years Present age of βBβ = 28 β 6 = 22 years
What will come in place of (?) question mark in the given number series.
960, 960, 480, ?, 40, 8
135, 148, ?, 184, 207, 236
100, 120, 260, ?, 3220, 16120
945, 1890, ?, 504, 144, 32
84, 105, ?,Β 168, 210, 259
What will come in place of the question mark (?) in the following series?
17, 138, 307, 532, ?, 1182
What will come in place of the question mark (?) in the following series?
?, 65, 37, 73, 29, 81
114, 156, ?,Β 238, 274, 304
What will come in place of the question mark (?) in the following series?
4000, ?, 320, 192, 153.6, 153.6
24, 8, 15, ?, 12, 4