`8.2xx5=`

In this question, some equations are solved on the basis of a certain system. On the same basis find out the correct answer from amongst the four alternatives for the unsolved equation. 7xx5xx6=576 , 4xx2xx5=245 , 8xx2xx5=?

8+4-:2xx5= ?

8.2xx4.4xx5.5=?

Some equations are solved on the basis of a certain system. On the same basis find out the correct answer for the unsolved equation. If 8xx2=61,8xx5=04 what is 8xx10=?

Find the number of zeros st the end of the product of the expression 2^1xx5^2xx2^3xx5^4xx2^5xx5^6xx2^7xx5^8xx2^9xx5^10 .

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

The approximate number of air molecules in a 1 m^3 volume at room temperature (300 K) and atmospheric pressure is (Use R = 8.2 xx 10^(-5 ) m^3 atm/mol K and N_A =6.02 xx 10^(23) mol^(-1) )

(9.8xx2.5xx7.6)/(0.5)=?

The sum of the series 1+ (2)/(3)((1)/(8)) + (2 xx 5 xx 8)/(3 xx 6 xx 9) ((1)/(8))^(3) +… is

8 xx 2/5 =