Question

Find out the correct answer for the unsolved equation on the basis of the given equations. If $6^{\ast }5=91,8^{\ast }7=169,{10}^{\ast }7=211$ then ${11}^{\ast }10=?$

• A. 331
• B. 993
• C. 678
• D. 845

Answer 1

The correct option is A 331

6∗5=91⇒6×5=306∗5=91⇒6×5=30
30×3+1=9130×3+1=91
8∗7=169⇒8×7=568∗7=169⇒8×7=56
56×3+1=16956×3+1=169
10∗7=211⇒10×7=7010∗7=211⇒10×7=70
70×3+21=21170×3+21=211
Therefore, 11∗10⇒11×10=11011∗10⇒11×10=110
110×3+1=331110×3+1=331.