`4/5xx20`

(-36/5)xx(20/-3)

Evaluate : (v) -(16)/(5)xx(20)/(8)

Determine the product by suitable arrangement: 5 xx 53 xx 20

The uncertainty in the determination of velocity of a dust particle (of mass 0.1 mg) is 4.5xx10^(-20)m*s^(-1) . Calculate the least uncertainty in its position.

2^5xx20^7xx18^4=2^x xx 3^yxx 5^z then find x,y,z

Write in terms of factorials. 5 xx 10 xx 15 xx 20

Write in terms of factorials: 5xx10xx15xx20