Question

7, 13, 25, 45, 75, ? A) 117 B) 153 C) 209 D) 123 E) 141 logic please.

Answer 1

Qᴜᴇsᴛɪᴏɴ :-

7, 13, 25, 45, 75, ?

A) 117

B) 153

C) 209

D) 123

E) 141

Sᴏʟᴜᴛɪᴏɴ :-

Logic :- First Number + (2 * 3) = Next Number and than +(3*4) , + (4*5) so on ...........

Check :-

→ 7 + (2 * 3) => 7 + 6 = 13

→ 13 + (3 * 4) => 13 + 12 = 25

→ 25 + (4 * 5) => 25 + 20 = 45

→ 45 + (5 * 6) => 45 + 30 = 75

Hence,

→ 75 + (6 * 7) = 75 + 42 = 117 (A) (Ans.)

Answer 2

I got a pattern and the answer is coming 141

(7*2) -1=13

(13*2) -1=25

(25*2) -5=45

(45*2) -5=75

(75*2) -9=141

The value that is being subtracted increments by 4 every two times it is repeated

Kindly correct if I am wrong