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Sahay Sir > Question Answers > NCERT Class 8 > Maths > Chapter 6 - Squares and Square Roots > 7. Without adding, find the sum. i. 1 + 3 + 5 + 7 + 9 ii. 1 + 3 + 5 + 7 + 9 + I1 + 13 + 15 + 17 +19 iii. 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23

7. Without adding, find the sum. i. 1 + 3 + 5 + 7 + 9 ii. 1 + 3 + 5 + 7 + 9 + I1 + 13 + 15 + 17 +19 iii. 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23

7. Without adding find the sum. i. 1 + 3 + 5 + 7 + 9 ii. 1 + 3 + 5 + 7 + 9 + I1 + 13 + 15 + 17 +19 iii. 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23