2.4. compute the following discrete logarithms. (a) log2(13) for the prime 23, i. e., p = 23, g = 2, and you must solve the congruence 24 = 13 (mod 23). (b) log10 (22) for the prime p= 47. (c) log627(608) for the prime p = 941. (hint. look in the second column of table 2.1 on page 66.)

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )