हर रोज बोले जाने वाले Words with Hindi Meaning_Conjunction Word Meaning_English Speaking Practice

The word .pit. in plant histology means

How many words (with or without meaning) of three distinct letters of the English alphabets are there?

How many words (with or without meaning) of three distinct letters of the English aphabets are there?

In sub - parts (i) to (x) choose the correct option and in sub - parts (xi) to (xv) , answer the questions an instructed. How many words , with or without meaning ,can be formed using the letters of the word ENGINEERING ?

The word systematics is derived from the latin word 'systema' which means?