RRB JE 1st June 2019 Shift-2
Instructions
For the following questions answer them individually
Question 3
In which of the following countries has Google opened the first African Artificial Intelligence lab recently?
Question 4
A cyclist goes from a place P to Q; first at 4 km/h and later at 5 km/h in 1 hour 24 minutes altogether. If the distances covered in the first and second part of the journey are in the ratio 2 : 1, when did the cyclist change his speed after start?
Question 5
Which offer is better?
1) Two successive discounts of 10% and 20%
2) Single discount of 30%
Question 7
The variance of a set of value $$x_1, x_2, .. . x_n$$, is given by whichof the following formulae?
