Which is the smallest fraction among the given fraction ?
\( \frac{4}{9} \) , \( \frac{5}{4} \) , \( \frac{3}{8} \) , \( \frac{6}{7} \)
\( \frac{6}{7} \)
\( \frac{5}{4} \)
\( \frac{4}{9} \)
\( \frac{3}{8} \)
If x= cos -1 (cos 4) and y=sin -1(sin 3) then which of the following conditions is true?
tan(x−y)=tan \( \frac{1}{2} \)
x+2y=2
tan(x+y)=−tan7
x+y+1=0
If x2 + y2= 156 and x-y = 12, then xy = ?
What is the mean of following data
| Class Interval | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 |
| Frequency | 8 | 12 | 16 | 11 | 13 |