Find the value of (?)

​$$6^{1.2}×36^?×30^{2.4}×25^{1.3}=30^5$$​​

Correct option is B

Given:

​$$6^{1.2} \times 36^{?} \times 30^{2.4} \times 25^{1.3} = 30^5$$​​

Concept Used:

$$a^{m} \times a^{n} = a^{m+n}$$

Solution:

​$$2^{1.2} \times 3^{1.2} \times 2^{2?} \times 3^{2?}\times 2^{2.4} \times 3^{2.4}\times 5^{2.4}\times 5^{2.6} = 2^5 \times 3^5 \times 5^5$$​​

Power of 2:

1.2 + 2? + 2.4 = 5

2? = 5 - 3.6 = 1.4

? = 0.7