What is the smallest base10 positive number that can be stor

What is the smallest base-10 positive number that can be stored using 7 bits, where the 1st bit is used for the sign of the number; the 2nd bit for sign of the exponent; 2 bits for mantissa, and the rest of the bits for the exponent?

Solution

those 7 bits can be used to store some numbers from negative to positive.
Notice that we are looking for smallest positive number and we know that it is 1 (as 0 is not counted as eighter positive or negative)
Hence answer is just 1.