Tool By Zeal Point

Super Trick: Multiply by: 7 × 11 × 13

Any number multiplied by 7 × 11 × 13 gives the same number repeated twice. (যিকোনো সংখ্যাক 7 × 11 × 13 ৰে গুণ কৰিলে সেই সংখ্যাটো দুবাৰ পুনৰাবৃত্তি হৈ উত্তৰ পোৱা যায়।)

Because / কাৰণ: $7 \times 11 \times 13 = 1001$

And:

N \times 1001 = N \times 1000 + N

So the number is repeated twice.

Examples / উদাহৰণ

$456 \times 7 \times 11 \times 13 = 456456$

$542 \times 7 \times 11 \times 13 = 542542$

$576 \times 7 \times 11 \times 13 = 576576$

843 × 7 × 11 × 13 = 843843

Remember / মনত ৰাখক

7 \times 11 \times 13 = 1001

Therefore: $N \times 7 \times 11 \times 13 = N N$

Just repeat the number twice! মাত্ৰ সংখ্যাটো দুবাৰ লিখক!

Super Trick: Multiply by 7 × 11 × 13