Five birds are sitting on a tree. The Pigeon is to the right of the Parrot. The Sparrow is above the Parrot. The Crow is next to the Pigeon. The Crane is below the Crow. Which bird is at the centre? 

Find the missing number?

In a school, the bell is rung once after each half an hour. The school starts at 8:00 a.m. and closes at 1: 30 p.m. The bell is rung 3 times continuously, at the time of beginning, at the time of lunch break at 10:00 and 10:30 a.m. and at the end. How many times is the bell rung every day? 

Directions: - In each of the following questions, five words are given. Which of them will come to arrange the following words according to the English dictionary order?
1. Herbivorous 2. Harmony 3. House 4. Honour 5. Helm 

Find out the correct answer for the unsolved equation on the basis of the given equations.
If 6 * 5 = 91
8 * 7 = 169
10 * 7 = 211
then 11 * 10 = ?

If the digits within the number ‘1409432381’ are arranged in descending order from left to right then how many digit places will be unchanged?

Which one set of letter when sequentially placed at the gaps in the given letter series shall complete it?
ab __ deabcdfb __ d __ gbcfg __ cf __ h __

In a class, there are 80 students who study both Computer Science and Electronics. While 100 students study Computer Science, 120 Students study Electronics, How many of them study Computer Science only?