Find the value of `(18^3+7^3+3xx18xx7xx25)/(3^6+6xx243xx2+15xx18xx4+20xx27xx8+15xx9xx16+6xx3xx32+64)`

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

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

Find the LCM of 2 xx 3 xx 5 xx 7 and 3 xx 5 xx 7 xx 11

What is the value of (1xx 2 +2xx 3-3xx 4 +4xx 5 -5 xx 6 +6 xx 7) ?

4xx9xx3 xx 6 = 6493, 2xx8xx1xx 8 = 8281, 3 xx 8 xx 5 xx 7 = ?

The number of zeros at the end of the product of : 2^3 xx 3^4 xx 4^5 xx 5^6 + 3^5 xx 5^7 xx 7^9 xx 8^10 + 4^5 xx 5^6 xx 6^7 xx 7^8 - 10^2 xx 15^3 xx 20^4 is :