Name: Karthik
Has any batsman scored a century in Tests without hitting a single boundary? If none, who has the least number of boundaries in getting to his hundred in Tests and one-dayers?

It's not easy to reply to this question, as some of the scorecards of the earlier era don't have details about the number of boundaries hit by batsmen. The highest individual score (for which details are available) in Test cricket without containing a boundary (four) is Geoff Boycott's 77 against Australia at Perth in 1978-79. His innings included a four, but it was an all-run four and not a boundary four. It was against the Packer-decimated Australian attack, on a slow outfield, during the first innings of a match which England eventually won by 166 runs.

Boycott's innings lasted seven-and-a-half hours, during which he faced 340 deliveries. In the second innings, he spent two hours at the crease in scoring 23, again without a boundary. He thus became the only player to score 100 runs in a Test match without a single boundary.

The least boundaries in an individual innings of 100 or more are two. The record is shared by two Englishmen -- Paul Gibb (during his innings of 120 against South Africa at Durban in 1938-39) and Graham Thorpe (during his innings of 118 against Pakistan at Lahore in 2000-01).

The highest individual score in a one-day international without a boundary four is New Zealand's Adam Parore's 96 (off 138 balls) against India at Baroda in 1994-95.

Name: Sam
What is/are the score(s) between 0 and 100 that Sachin Tendulkar has never got out in Test cricket?

Tendulkar has never been dismissed on 25,30,33,38,46,48,58,66,70,72,75,77,80,81,84,87,89,93,95,98 & 99 in Test cricket.

In addition, Tendulkar has also not been dismissed on 56 and 60, although he remained unbeaten on these scores once each.