Question

What should come in place of '?' in the given series? -12, +24, 48, +96, ?, +384

• A. -192
• B. 108
• C. 96
• D. -108

Answer 1

Answer:

A. -192

Look at the pattern in magnitudes:

$12 \rightarrow 24 \rightarrow 48 \rightarrow 96 \rightarrow ? \rightarrow 384$
]

Each term is multiplied by 2.

Now track the signs:

$-12,; +24,; 48,; +96,; ?,; +384$
The signs follow a pattern:
$-, +, +, +, -, +$

So the missing term should be negative.

Step:

$96 \times 2 = 192$
With correct sign:
$\boxed{-192}$