There are some online calculators like decimal-to-binary.com/decimal-to-binary-converter-online.html are available. But for exam you cannot use it. So it is better to study this simple step:

10010112 = 1∙2^6+0∙2^5+0∙2^4+1∙2^3+0∙2^2+1∙2^1+1∙2^0 = 64+0+0+8+0+2+1 = 75.

I hope this will help you.

Regards,

Dina Haines

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