Question

If FE= 254
BE=190
FAB=4011
A =?​

Answer 1

Answer:

a = 4011

b = 3989

a×b=4011×3989

=15999879

Shortcut Method:

a=4011⇒(4000+11)

b=3989⇒)(4000−11)

[(a−b)(a+b)=a2−b2]

According to question

a×b=(4000+11)(4000−11)

=40002−112=16000000−121=15999879

Explanation:

Answer 2

Answer:

The value of A is $10$

Explanation:

To convert hexadecimal number FE to decimal, follow these two steps:

• Start from one's place in FE : multiply ones place with 16^0, tens place with 16^1, hundreds place with 16^2 and so on from right to left
• Add all the product we got from step 1 to get the decimal equivalent of FE.

Using the above steps, here is the work involved in the solution for converting FE to decimal number (Don't forget that we start from ones place to so on...)

• Decimal equivalent of "E" = (E)$14 * 16^0 = 14$
• Decimal equivalent of "F" = (F) $15 * 16^1 = 240$
• Decimal equivalent of "FE" = $240+14$

FE = 254

To convert hexadecimal number BE to decimal, follow these two steps:

Start from one's place in BE : multiply ones place with 16^0, tens place with 16^1, hundreds place with 16^2 and so on from right to leftAdd all the product we got from step 1 to get the decimal equivalent of BE.

Using the above steps, here is the work involved in the solution for converting BE to decimal number (Don't forget that we start from ones place to so on...)

• Decimal equivalent of "E" = (E) $14 * 16^0 = 14$
• Decimal equivalent of "B" = (B) $11 * 16^1 = 176$
• Decimal equivalent of "BE" $= 176+14$

BE = 190

To convert hexadecimal number FAB to decimal, follow these two steps:

• Start from one's place in FAB : multiply ones place with 16^0, tens place with 16^1, hundreds place with 16^2 and so on from right to left
• Add all the product we got from step 1 to get the decimal equivalent of FAB.

Using the above steps, here is the work involved in the solution for converting FAB to decimal number (Don't forget that we start from ones place to so on...)

Decimal equivalent of "B" = $(B) 11 * 16^0 = 11$Decimal equivalent of "A" = (A) $10 * 16^1 = 160$Decimal equivalent of "F" = $(F) 15 * 16^2 = 3840$Decimal equivalent of "FAB"$= 3840+160+11$

FAB = 4011

To convert hexadecimal number A to decimal, follow these two steps:

• Start from one's place in A : multiply ones place with 16^0, tens place with 16^1, hundreds place with 16^2 and so on from right to left
• Add all the product we got from step 1 to get the decimal equivalent of A.

Using the above steps, here is the work involved in the solution for converting A to decimal number (Don't forget that we start from ones place to so on...)

Decimal equivalent of "A" = (A) $10 * 16^0 = 10$Decimal equivalent of "A" = 10

A = 10