Missing Number in Star Pattern

CMAT 2025 · Logical Reasoning · Medium · Logical Reasoning

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Find the missing number in the given star figure where opposite triangle pairs sum to 20: $(19, 1), (17, 3), (15, 5), (18, 2), (16, 4)$ and $(?, 6)$ .

Six-pointed star diagram with numbers in triangular regions and a question mark

A.
14
B.
13
C.
20
D.
21

Answer

Explanation

Opposite numbers in the star pattern sum up to 20:

$19 + 1 = 20$
$17 + 3 = 20$
$15 + 5 = 20$
$18 + 2 = 20$
$16 + 4 = 20$

Thus, $? + 6 = 20 \implies ? = 14$ .

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Missing Number in Star Pattern

Explanation

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