If `-` and `-:` are interchanged then find the new value of `15xx4+15-11xx33-:98`

If mathematical operators − and ÷ are interchanged, then the value of 15xx4+15-11xx33-:98 is A. 6 B. 7 C. 8 D. 9

Find the value of (-15) xx 2

Find the value of 15625xx(-2)+(-15625)xx98

sqrt6xx sqrt15=xsqrt10 .then find the value of x.

Evaluate: 15xx5-:3-15+10

Find the factorials of 15xx8xx6

Write the value of, |15xx3-(7xx2)xx4|

Use the formula to find the values : 98xx102