What is 1 bar?

Let |bar(a)|=7, |bar(b)|=11, | bar(a)+bar(b)|=10 sqrt(3) What is |bar(a)-bar(b)| equal to ?

Given P(A uu B) = 5/6, P(A nn B) = 1/3 and P(bar(B)) = 1/2. What is P(bar(A)) ?

What is the value of 1.bar(34) + 4.1bar(2) ?

What is the value of 2.bar6 - 1. bar9 ?

What is the value of 2.bar(6)-1.bar(9) ?

What is the angle between ? (i) bar(AB) and bar(AC) (ii) bar(AB ) and bar(BC)

Let A and B are two mutually exclusive events with P(A)= (1)/(3) P(B) = (1)/(4) What is the value of P(bar(A) nn bar(B)) ?

What is represented by 1 bar ? What is its value in SI units ?

If bar(a) , bar(b) and bar(a)-sqrt2bar(b) are unit vectors, then what is the angle between bar(a), bar(b) ?

What is the height of each bar in a percentage bar graph?