What is the value of `(5 –(2 xx 10)–4 )/(2 –(5 xx 5) –6 )` ?

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

What is the value of (5.0 xx 10^(-6)(5.0xx10^(-8) with due regards to significant figures ?

What is the value of (7.5xx7.5+37.5+2.5xx2.5)?

What is the value of (2div3xx(1+3)+5-6)/(2"of"3div5xx4+3-2)?

What is the value of : (12 " "of" "6 div 9 + 12 xx 4 -(2xx 4 - 5))/(12 div 3 xx 4 (2 xx 4 - 5)) ?

2.A) Find the value of 4^5 xx 2^3 xx 2^(-6)

What is the value of (2000-:(1/2)"of"(25/2)xx(5/2)"of"(4/25)-5) ?

What is the value of (1xx2+2xx3-3xx4+4xx5-5xx6+6xx7) ? (1xx2+2xx3-3xx4+4xx5-5xx6+6xx7) का मान क्या होगा ?