Question
A is younger than B by 2 years. If the ratio of A and B
ages is 5:7 respectively, then find the age of A.Solution
If B’s age be x years, then A’s age be (x - 2) years. According to question, => (x – 2)/x = 5/7 => 7x – 14 = 5x => x = 7 Therefore A's age = 7 – 2 = 5 years
625, 5, 125, 25, 25, ? , 5
21 23 26 ? 39 51
...Identify the logic of the below given series and given answer.
Series I :: 1840, 1719, (P), 1694, 1890, 1665, 1921
Series II :: 175, 4...
96Â Â Â 111Â Â Â 131Â Â Â ? Â Â Â Â Â 186Â Â Â Â 221
Choose the correct alternative
21: 3 ∷ 574: ?
A sequence {Tₙ} is defined by: Tₙ = a·n² + b·n + c for all positive integers n, where a, b, c are constants.
It is known that - Tâ‚‚ = 11,...
16    9    11   26    ?    912
The number of terms in the sequence 20, 25, 30, ….., 160 is:
70    191    47    216    ?    245
12 78 385 ? 4629 9260
...
