40 വരെയുള്ള ഇരട്ടസംഖ്യകളുടെ തുക എത്ര?
A1640
B400
C420
D820
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1 മുതൽ 30 വരെയുള്ള എണ്ണൽ സംഖ്യകളുടെ തുക എത്ര?
Tailors Abraham and Joju need to stitch 400 bags. On the first day, Abraham stitches 13 bags, and Joju stitches 18 bags. Each following day, both of them stitch one more bag than they did the previous day. How many days will it take for them to complete their goal?
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