Question

without adding find the sum
(a) 1+3+5+7
(b) 1+3+57+9+11+13+15+17+19+21+23


please tell me the answer its important​

Answer 1

Step-by-step explanation:

a) 1+3+5+7=16

b) 1+3+57+9+11+13+15+17+19+21+23=180

Answer 2

Answer:

a

1 + 3 = 4 + 5 = 9 + 7 = 16

b

1 + 3 = 4 + 57 = 61 + 9 = 70 + 13 = 83 + 15 = 98 + 17 = 115 + 19 = 134 + 21 = 155 + 23 = 178