if 121 is expressed as the sum of 1 numbers , then which of these is correct ? (I) 2(2+4+6+8+10+12+14+16+18+20)+8 (ii) 3 (2+4+6+8+10+12+14+16+18+20)+10 (iii) 3 (1+2+3+4+5+6+7+8+9+10)+9 (iv) 2 (1+2+3+4+5+6+7+8+9+10) +11
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2 (1+2+3+4+5+6+7+8+9+10) +11 this your answer
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