How many triangles in the figure?

Which of the following options represents a meaningful sequence of words given below?
(1) Month
(2) year
(3) weeks
(4) days

From the given answer figures, select the one in which the question figure is hidden/embedded.

Find the next term in the given series.
 1200, 600, 300,  ?

Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.

BOND, FKRZ, JGVV, NCZR, ?

The positions of how many digits in the number 2451479638 will remain same when the first half and the second half of the digits are arranged in ascending order separately?

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
m_ane_nma_men_eam_an 

Direction: From the given alternatives select the word which cannot be formed using the letters of the given words.
"COMPETITION"