Question

which term is missing in the sequence 50, 40, —, 20, 10?
a. 35
b. 45
c. 25
d. 30

Explanation:

Step1: Identify sequence pattern

The sequence decreases by 10 each term: $50 - 10 = 40$

Step2: Calculate missing term

Subtract 10 from 40: $40 - 10 = 30$

Step3: Verify pattern consistency

Check next term: $30 - 10 = 20$, which matches the given sequence.

Answer:

d. 30