If A={1,2} then how many total relations are possible from A to A?

C. 16

Step 1: Identify the concept: this is about number of relations. Step 2: A has 2 elements so A x A has 4 pairs and number of relations is 2^4=16. Step 3: For relation count use 2 raised to number of pairs.

Step 1: concept पहचानें: यह number of relations का प्रश्न है। Step 2: A में 2 elements हैं इसलिए A x A में 4 pairs होंगे और relations की संख्या 2^4=16 होगी। Step 3: Relations count के लिए 2 raised to number of pairs याद रखें।