Question

*निम्नलिखित में से कौन 21 का वर्ग है?* 1️⃣ 400 2️⃣ 421 3️⃣ 420 4️⃣ 441​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer: 4.) 441

Step-by-step explanation:

• To find the square of 21
• $(21)^{2}$ Square of a number means to multiply tha number with itself.
• ∴ $(21)^{2}$ =21×21

                   =441

• Hence,the square of 21 is 441.