21. यदि एउटा साइकलको अङ्कित मूल्यमा 10% छुट दिँदा विक्रेतालाई
5% नाफा हुन्छ र 5% छुट दिँदा रु. 351 नाफा हुन्छ भने उक्त
साइकलको क्रयमूल्य पत्ता लगाउनुहोस् ।
When a cycle is sold allowing 10% discount on its marked
price a seller gains 5% and allowing 5% discount the profit is
Rs-351. Find the cost price of the cycle. (Ans: Rs.3240)

Consider a file currently consisting of 200 blocks. assume that the file control block (and the index block in the case of indexed allocation) is already in memory. calculate how many disk i/o operations are required for contiguous, linked, and indexed (single-level) allocation strategies, for each of the conditions listed below. in the contiguous-allocation case, assume that there is not room to grow at the beginning but there is room to grow at the end. also assume that the block information to be added is stored in memory.