Let $a\equiv (3^{-1} 5^{-1} 7^{-1})^{-1}\pmod{11}$. What is the remainder when $a$ is divided by $11$

Which expression is equivalent to 5r6141 2r+st6

The probability that you roll a two on a six-sided die is 1 6 16 . if you roll the die 60 times, how many twos can you expect to roll

Plz hurry evaluate the expression a+b where a=8 and b=19