Mathematical an...

Choose or find odd word:
Discus, Spear, Javelin, Hockey

Choose or find odd number:
$$51,144,64,121,256$$

Choose or find odd word:
Othello, King Lear, Oliver Twist, Macbeth

Choose or find odd number:
$$21,39,51,63,83$$

Choose or find odd number:
$$43,53,63,73,83$$

Choose or find odd number:
$$324, 244, 136,352,514$$

In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces.

6, 13, 28,

Choose or find odd number:
$$15,21,24,28,30$$

Choose or find odd number:
$$6,12,18,9,7$$

Find the wrong number in the series :
3, 8, 15, 24, 34, 48, 63