In a sequence of numbers, each number other than the first two is the sum of the two immediately pre — CSAT 2026 Answer & Explanation

2026

In a sequence of numbers, each number other than the first two is the sum of the two immediately preceding numbers from it. If the first two numbers in the sequence are 4 and 7, then the sixth number is

Explanation

The sequence follows the rule $a_n = a_{n-1} + a_{n-2}$ . Starting with 4 and 7:

$a_1 = 4$ , $a_2 = 7$
$a_3 = 4 + 7 = 11$
$a_4 = 7 + 11 = 18$
$a_5 = 11 + 18 = 29$
$a_6 = 18 + 29 = 47$

Thus, the sixth number is 47.

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