Question
The first, second and fourth terms of a ratio are 4, 6
and 12 respectively. So what will be the third term?Solution
We are given: First term (A) = 4, Second term (B) = 6 & Fourth term (D) = 12 Third term (C) = ? In a proportion, the terms are in the form: A : B = C : D So, A/B = C/D Or, 4/6 = C/12 Or, C = (4 x 12)/6 C = 8
Let a=i+j+k, b=2i+j−k, and c=a×b. The angle between c and a is:
- Which numbering system consists of digits 0-9 and letters A-F?
(28 × 5 ÷ 7) × 6 = ?
1, 4, 13, 36, 97, ?
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