Question

Find the missing values: $25\times (15\times ......)=(.....\times 15)\times 10$

• A. $10,15$
• B. $10,10$
• C. $15,25$
• D. $10,25$

Answer 1

The correct option is D $10,25$

Multiplication is associative for whole numbers. $i.e.a\times (b\times c)=(a\times b)\times c$
$\therefore 25\times (15\times 10)=(25\times 15)\times 10$
$\therefore$ The missing terms are $10,25$.