Number series (decreasing gaps): Find the next term in 120, 99, 80, 63, 48, ? Observe the first differences and extend the pattern to compute the missing term. Choose the correct value.

Compute first differences 99 − 120 = −21 80 − 99 = −19 63 − 80 = −17 48 − 63 = −15

Pattern Differences increase by +2 each step (−21, −19, −17, −15 …).

Next difference and term Next diff = −13 ⇒ Next term = 48 − 13 = 35.