Question

Find the next number in the following sequence: 42.00, 39.50, 37.00, 34.50, ...

• A. 32.00
• B. 7320.50
• C. 38.00
• D. 11008.00

Answer 1

The correct option is A

32.00

The given sequence is: 42.00, 39.50, 37.00, 34.50, ...

Note that the difference between the consecutive terms in the above sequence is -2.50

Hence the given sequence forms an AP whose first term (a) is 42.00 and the common difference (d) is -2.50

Therefore the $5^{th}$ term of the above sequence is,

$a_5$ = 42.00 + (5-1)(-2.50) ($\because$ $a_n$ = a + (n-1)d)

$⟹$ $a_5$ = 32.00