Given 1 + 2 + 3 + 4 ... ... + 10 = 55 then the sum 6 + 12 + 18 + 24 + ... . . + 60 will be equal to-
दिया है 1 + 2 + 3 + 4 ... ... + 10 = 55 तो योगफल 6 + 12 + 18 + 24 + ... . . + 60 बराबर होगा-
Solution:
6 + 12 + 18 + 24 + ... . . + 60
= 6(1+2+3+4…..+10)
Given 1 + 2 + 3 + 4 ... ... + 10 = 55
= 6 (55)
= 6 x 55
= 330
So 6 + 12 + 18 + 24 + ... . . + 60 = 330
So the correct answer is option C.
हल:
6 + 12 + 18 + 24 + ... . . + 60
= 6(1+2+3+4…..+10)
दिया है 1 + 2 + 3 + 4 ... ... + 10 = 55
= 6 (55)
= 6 x 55
= 330
अतः 6 + 12 + 18 + 24 + ... . . + 60 = 330
अतः सही उत्तर विकल्प C है l
The sum of three consecutive natural numbers which are divisible by 3 is 72. Which is the largest number among these?
3 से विभाजित होने वाली तीन क्रमागत प्राकृतिक संख्याओं का योग 72 है l इनमे से सबसे बड़ी संख्या है ?