Keyword Analysis & Research: what is the hardest math problem to solve

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what is the hardest math problem to solve	1.23	0.7	8174	70	41
what	1.7	0.1	753	82	4
is	0.57	0.7	3025	36	2
the	1.88	0.1	4836	99	3
hardest	0.7	0.3	3480	19	7
math	1.62	0.3	9433	4	4
problem	0.94	0.4	6259	29	7
to	1.41	0.7	2409	66	2
solve	1.86	1	1745	79	5

Keyword	CPC	PCC	Volume	Score
what is the hardest math problem to solve	0.88	0.3	2244	12