7. Without adding, find the sum.
(1) 1 + 3 + 5 + 7 + 9
1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 +19
(m) 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 +23
Answers
Answered by
1
24
99
143
this is the ans
first multiple 3×1=3
Answered by
1
Step-by-step explanation:
the answer will be
1) 1+8+7+9+4+12+9+24+15+36
=18+7+16+33+51
=25+49+51
=25+100
=125
2) 8+16+24+35+40+23
=24+24+75+23
=48+23+75
48+75+23
48+108
156 is the answer
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