As a rule, we don't use the passive voice with "let". "Allow" or "permit" is normally used instead: We were allowed to do whatever we wanted. We were permitted to drive the vehicle.

Understanding the Context

Accordi... I think that "Let A be a set, let B be a group, and let C be a number." is the most formal phrasing. Since this is a mathematically formal usage, I think that would be preferred, but I don't think any of the phrases you presented are wrong, and "Let A be a set, B a group, and C a number." is shorter and more succinct. On a separate note, we have a sister site for Math you might consult.

Key Insights

Thus you don't need to always change each Let's/Let us with a "replacement" however we will presume you do, so we could replace let us with We want to see x and y. The Surface Pro (11th generation) (also referred to as the Surface Pro 11th Edition) is a 2-in-1 detachable tablet computer developed by Microsoft to supersede the Surface Pro 9 and Surface Pro X. Welcome to the March 2026 edition of What's new in Microsoft 365 Copilot! Every month, we highlight new features and enhancements to keep Microsoft 365 admins up to date with Copilot features that help your users be more productive and efficient in the apps they use every day. Let’s take a closer look at what’s new this month: User capabilities: Video recap of meetings in Copilot Chat ...

Final Thoughts

My whatsapp chat history with media is over 20GB since 15 years ago until now.I plan to delete the account and re-register again with clean base. But I need to maintain the chat history with media in PC so when I need to search back some info, I can gather back from the PC in according to the chat history with specified person.Anyone did it before and please recommend.