Question

Write multiplication table of $9$ using vinculum method and identify the number at fifth place.

• A. $36$
• B. $45$
• C. $54$
• D. $90$

Answer 1

The correct option is B $45$

We can write $9$ as $10-1$

In Vinculum method, instead of multiplying the number with $9$, its multiplied with $10$ and $1$ and the results are subtracted.

The multiplication table for $9$ is as shown in the figure.

Lets consider the fifth place,

$(10-1)\times 5=10\times 5-1\times 5=50-5=45$