`4+8-:2xx5=?`

8+4-:2xx5= ?

8.2xx4.4xx5.5=?

If 4xx5xx2=524,3xx7xx2=723 and 6xx8xx7=876 then 9xx4xx5=?

Tell what property allow you to compute : 3/4 xx(8xx2/5) as (3/4 xx8) xx 2/5

Find the unit digit of 3^6 xx 4^7 xx 6^3 xx 7^4 xx 8^2 xx 9^5 .

Solve 2.5xx4.8+7.2xx1.5-1.2xx14=? (a) 1.2(b)6.5(c)4(d)4.8(e)6

Solve ((5.9)^(3)+(1.8)^(3)+(4.8)^(3)-3xx5.9xx1.8xx4.8)/((5.9)^(2)+(1.8)^(2)+(4.8)^(2)-5.9xx1.8-1.8xx4.8-4.8xx5.9)

If 5xx4=15,7xx8=49 and 6xx5= 24 , then 8xx4 is equal to :

12.8xx4.5xx2.2=?

10.8xx5.5xx8.4=?