`2/5*13*3/5*13-10` =

The line of intersection of the planes vecr.(3hati-hatj+hatk)=1 and vecr.(hati+4hatj-2hatk)=2, is (A) (x-6/13)/2=(y-5/13)/-7=z/-13 (B) (x-6/13)/2=(y-5/13)/7=z/-13 (C) (x-4/7)/-2=y/7=(z-5/7)/13 (D) (x-4/7)/-2=y/-7=(z+5/7)/13

A=[[1,2,-12,3,-13,4,-1]] and B=[[1,-3,-5-1,3,-5-1,3,-5]]

(2/13)^(4/3)div(2/13)^(5/3)

Prove that: 2cos (pi)/(13) cos (9 pi)/(13)(3 pi)/(13)(5 pi)/(13)=0

The sum to n terms of [(1)/(1.3)+(2)/(13.5)+(3)/(1.3.5.7)+(4)/(1.3.5.7.9)+…………]

Represent -(2)/(13),(5)/(13),(-9)/(13) on the number line.

Explain why 7*11*13+13and7*6*5*4*3*2*1+5 are composite numbers.

If [(2+x,3,4),(1,-1,2),(x,1,-5)] is a singular matrix then x is (A) 13/25 (B) -25/13 (C) 5/13 (D) 25/13

If 23$35 = 13, 3$5 = 8 then what is the value of 4$13 = ?

Find the value of 3/5xx4[7-{2/5xx(13+2)}] 3/5xx4[7-{2/5xx(13+2)}] का मान क्या है ?