23
(45 + 46 + 47 + .... + 113 + 114 + 115) is equal to
- A5600
- B5656
- C5680
- D4000
Answer not set
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0
CCommunity
5680
0
CCommunity
(45 + 46 + 47 + ....... + 114 +
115)
= (1 + 2 + 3 +..... + 115) –
(1 + 2 + 3 + .... + 44)
= 115 × 58 – 22 × 45
= 6670 – 990 = 5680
115)
= (1 + 2 + 3 +..... + 115) –
(1 + 2 + 3 + .... + 44)
= 115 × 58 – 22 × 45
= 6670 – 990 = 5680