Should be #92
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#91. Does the sum of the digits of the answer in #90 prime?
]]>#90. What is the square root of 121?
#91. It's obvious that it's prime. But, does the sum of its digits equal a prime number, too?
]]>I do not understand the questions please explain.
]]>#86. 1+2+4+8+1+6+3+2+6+4+1+2+8...+1+0+4+8+5+7+6
#87. 1+3+9+2+7+8+1+2+4+3+7+2+9...+3+8+7+4+2+0+4+8+9
#88. 1+5+2+5+1+2+5+6+2+5+3+1+2+5...+9+7+6+5+6+2+5
Note: Give me the pattern first before the sum. Both in separate posts.
#89. Sum of digits of #86-88.
After solving for the sum of 86, 87 and 88, respectively, answer this in a separate post, again.
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I'll write the items more user friendly.
83. What is 3 to the 5?
84. Multiply that answer by itself.
85. Multiply it by the nth prime (let n be the answer to #83).
#81. What is 81^4?
#82. Is (Sum of digits of 81^4) prime?
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