Evaluate without calculating `52^(2)`.

Evaluate the following: ^(52)C_(52)

Evaluate the following: \ ^(52)C_(52)

Calculate the value of the following without using a calculator. (15)^(2)

Calculate the value of the following without using a calculator. (-60)^(2)

Evaluate without using triignometric tables,** "sin"^(2)28^(@)+"sin"^(2)62^(@)+"tan"^(2)38^(@)-"cot"^(2)52^(@)+1/(4)"sec"^(2)30^(@)

Ravi calculated 29xx51 and wrote the answer as 1079. Without calculating. Can you find if the answer is correct or not?

Calculate the value of the following without using a calculator. (1""3/8)^(2)

Using suitable identity evaluate the (52 ) ^(2)

Find the square root of each of the following numbers, without the use of calculator. 16

Find the value of each of the following, without the use of calculator. sqrt(121)