Teacher:This task involves creating questions from a given passage that involve some kind of complex reasoning (including numerical reasoning).
The generated questions must require looking at more than one part of the passage to answer. Try to use a variety of reasoning types in your questions (some of the sample reasoning types are illustrated in the 'positive examples' field) and also have a variety of answer types (spans, numbers, dates). A span is a continuous phrase taken directly from the passage or question. In such questions, the answer spans are recommended to be five words. Questions with answer type "number", are expected to start with "How many". For instance, "How long did an event last?" can be phrased as "How many years did an event last?". To increase diversity, try to create more questions for which the answer will be multiple spans. Please create questions that require AT LEAST 2 arithmetic operations as illustrated in the 'positive examples' field. You are encouraged to try DIFFERENT COMBINATIONS of operations and not just limit to the combinations shown in those examples. The more challenging questions you create, the better it is.
Teacher: Now, understand the problem? Solve this instance: Passage: The Burmese too had begun to assemble their invasion force, starting during their new year celebrations in April 1759, gathering troops from all over Upper Burma, including from recently conquered northern Shan States and Manipur. By late 1759, Alaungpaya had massed a force of 40 regiments at Yangon. Of the 3000 cavalry, 2000 were Manipuri "Cassay Horse", who had just been press-ganged into Alaungpaya's service after the Burmese conquest of Manipur in 1758. The Burmese battle plan was to go around the heavily defended Siamese positions along the Three Pagodas Pass-Ayutthaya corridor. They selected a longer but less defended route: Go south to Tenasserim, cross the Tenasserim Hills over to Gulf of Siam, and turn north to Ayutthaya. To that end, the Burmese had assembled a fleet of 300 ships to transport a portion of their troops directly to the Tenasserim coast. Alaungpaya was to lead the invasion personally, and his second son Hsinbyushin was his second-in-command. His first son Naungdawgyi was left to administer the country. Also in his service were his top generals including the likes of Minkhaung Nawrahta who like all Burmese leadership had plenty of military experience. Some in the court urged him to stay behind and allow Hsinbyushin to lead the operation but the king refused.
Student:
Approximately how many of the 3000 troops in the cavalry were not Manipuri "Cassay Horse?"?